Each week you will have a question that you must answer.
The questions are worth 10 points each. The first person to correctly answer the question each week will get 5 bonus points.
YOU MUST USE AT LEAST THREE SENTENCES TO EXPLAIN YOUR ANSWERS.
Thursday, October 23, 2014
GP 2 Week 2
A train leaves Chicago traveling to LA and is traveling at 40 mph. 2 hours later another train leaves heading in the same direction. The second train is traveling at 60 mph. How long until the second train passes the first train?
I think the answer is 5, because if you find the gcf[greatest common factor] of forty and sixty they meet at 120 hours. There is 5 hours all together 3 for forty and 2 for sixty, 3 plus 2 equals 5 as a total. They meet with 120mph but i takes 5 complete hours to do so.
aI think john is correct . the correct answer should be 5 hours and h equals 5 . if john is correct the answer should be 5 hours till the second train passes the first.
On hour 6 the second train will pass the first. 40x6=240. 60x4=240. Its 60x4 because the first train was going for 2 hours before the second one started going.
I think the second train will pass the first train in four hours. I think this because, the first train was already eighty miles, while the second was sixty, and if you add forty to eighty for the first and sixty to sixty for the second, you'd get one hundred and twenty for the first train, and one hundred and twenty for both. And if you repeat the addition, the answer for train one would be one hundred and sixty, and train two would be one hundred and eighty. So train two would be past train one by twenty miles.
40+40 = 80 mph for first two hours train #1 60 mph for startup two hours after train one.
80+40=120 mph train #1 third hour 60+60= 120 mph train #2 second hour
Since the first train is two hours ahead of the second train, you would multiply 40 mph by the time (2 hours). The first train has traveled 80 mph in two hours. For the second train you would have to multiply 60 mph by the time also. The second train has traveled 120 mph. In two hours the second train will pass the first train.
I agree with alexus because he first train is two hours ahead of rhe second train and you multiply 40 miles by the time which is 2 hours. The first train traveled 80mph in 2 hours. The second train you multiply 60mph times 2 hours. The second train traveled 120 mph. Tje second train is faster
I agree with Alexus also because the first train travel 40mph in 2 hours and then you times it which equal to 80 mph for the first train travel. The second train travel 60 mph in 2 hours because of 40 miles times by 2 .It will take 2 hours to take the train in the same direction
I also agree with Alexus because if the train travels 40mph in 2 hours then you would multiply 40 and 2 which equals 80 mph. The second train travel you would multiply 60 by 2 and get 120mph. So it would take the second train two hours to catch up with the first one.
i agree with Alexus because if train #1 is traveling 40 mph in two hours than you would multiply 40 by 2 to get 80 mph. train #2 travel 60 mph in 2 hours then you would multiply it by 2 to get 120 mph so it would take the train two hours to catch up to the first on.
The second train would pass the first train in 3 hours. Even tho it caught up to the first train at two hours doesn't mean it passed it. I solved this problem by starting with 60 and 80 and then I added 60 to 60 3 times and I added 40 to 80 three times. This is how I got my answer.
i disagree with Carlos because the train didn't leave till 2 hours later and according to carlos he said the train left an hour later. the first train would have gone 80 mikes while the second train starts up. after 3 hours the first train would have gone 120 miles while the second train would have gone 60. after 4 hours the first train would have gone 160 miles and the second train would have gone 120. that means that after 5 hours the first train went 200 miles and the second train went 180 miles. At 6 hours the second train caught up at both being 240 miles and the 7th hour the second train passed the first train went 280 and the second train went 300 miles.
I agree with alexus the first train has traveled for 2 hours at 40mph so it would be 40×2 which would be 80 and the second train would Going at 120mph so it would 2hours before the second train passes the first
I Agreeeee with Alexus O Becauseeee the 1st train has traveled for 2 Hrs at 40mph so it would be 40 mulitplied 2 which would be (80) and the 2nd train would going at 120mph so it would 2hrs before the second train passes the 1st train .
I agree with Alexus . The first train has traveled for 2 hours 40mph so you would have to do 40*2 witch would be 80. and the second train would be going 120mph .so it would be 2hours before the second train passes the first train
Since the 1st train is 2 hours ahead of the 2nd train you would multiply 40 mph by the time 2 hours. The 1st train has traveled 80 mph in 2 hours. For the 2nd train you would have to multiply 60 mph by the time also. The 2nd train has traveled 120 mph. In 2 hours the 2nd train will pass the 1st train.
The first train is two hours ahead of the second train, you would multiply 40 mph by the time (2 hours). The first train has traveled 80 mph in two hours. For the second train you would have to multiply 60 mph by the time also. The second train has traveled 120 mph. In two hours the second train will pass the first train.
The first train is going 40mph and the second train is going 60mph and it left the station 2 houers after so that means the second train will pass the first one in two
Since the it takes the first train is two hours ahead of the first you multiply 40x2=80. So do the same for the second train 60x2=120. So that means it will take two hours for the trains to go in the same direction.
the first is ahead of the second two by two hours. when you multiply 40 by 2 you get 80mph. the second you multiply 60 by 2 and you get 120mph. at the rate the second train is going the to pass the first train in 1 hour
It will take the 2nd train 2 hours to meet the first one. First I multiplied 40 by 3 and got 120 minutes. Then I multiplied 60 by 2 and got 120 minutes.
the first is ahead of the second two by two hours. when you multiply 40 by 2 you get 80mph. the second you multiply 60 by 2 and you get 120mph. at the rate the second train is going the to pass the first train in 1 hour
Train #2 will pass train #1 in 2 hours. Train #1 travels 40mph(2 hours) which equals 80mph and train #2 travels 60mph(2 hours) which equals 120mph. Train #2 will reach LA before train one by 2 hours.
The answer to this question would be 10 hours. used the equation 40h+2=60h and solved for h which would be hours.
ReplyDeleteI think the answer is 5, because if you find the gcf[greatest common factor] of forty and sixty they meet at 120 hours. There is 5 hours all together 3 for forty and 2 for sixty, 3 plus 2 equals 5 as a total. They meet with 120mph but i takes 5 complete hours to do so.
ReplyDeleteaI think john is correct . the correct answer should be 5 hours and h equals 5 . if john is correct the answer should be 5 hours till the second train passes the first.
DeleteOn hour 6 the second train will pass the first. 40x6=240. 60x4=240. Its 60x4 because the first train was going for 2 hours before the second one started going.
ReplyDeleteI think the second train will pass the first train in four hours. I think this because, the first train was already eighty miles, while the second was sixty, and if you add forty to eighty for the first and sixty to sixty for the second, you'd get one hundred and twenty for the first train, and one hundred and twenty for both. And if you repeat the addition, the answer for train one would be one hundred and sixty, and train two would be one hundred and eighty. So train two would be past train one by twenty miles.
ReplyDelete40+40 = 80 mph for first two hours train #1
60 mph for startup two hours after train one.
80+40=120 mph train #1 third hour
60+60= 120 mph train #2 second hour
120+40= 160 mph train #1 fourth hour
120+60= 180 mph train #2 third hour
Since the first train is two hours ahead of the second train, you would multiply 40 mph by the time (2 hours). The first train has traveled 80 mph in two hours. For the second train you would have to multiply 60 mph by the time also. The second train has traveled 120 mph. In two hours the second train will pass the first train.
ReplyDeleteI agree with alexus because he first train is two hours ahead of rhe second train and you multiply 40 miles by the time which is 2 hours. The first train traveled 80mph in 2 hours. The second train you multiply 60mph times 2 hours. The second train traveled 120 mph. Tje second train is faster
DeleteI agree with Alexus also because the first train travel 40mph in 2 hours and then you times it which equal to 80 mph for the first train travel. The second train travel 60 mph in 2 hours because of 40 miles times by 2 .It will take 2 hours to take the train in the same direction
DeleteI also agree with Alexus because if the train travels 40mph in 2 hours then you would multiply 40 and 2 which equals 80 mph. The second train travel you would multiply 60 by 2 and get 120mph. So it would take the second train two hours to catch up with the first one.
Deletei agree with Alexus because if train #1 is traveling 40 mph in two hours than you would multiply 40 by 2 to get 80 mph. train #2 travel 60 mph in 2 hours then you would multiply it by 2 to get 120 mph so it would take the train two hours to catch up to the first on.
DeleteThe second train would pass the first train in 3 hours. Even tho it caught up to the first train at two hours doesn't mean it passed it. I solved this problem by starting with 60 and 80 and then I added 60 to 60 3 times and I added 40 to 80 three times. This is how I got my answer.
ReplyDeleteThis comment has been removed by the author.
ReplyDeletei disagree with Carlos because the train didn't leave till 2 hours later and according to carlos he said the train left an hour later. the first train would have gone 80 mikes while the second train starts up. after 3 hours the first train would have gone 120 miles while the second train would have gone 60. after 4 hours the first train would have gone 160 miles and the second train would have gone 120. that means that after 5 hours the first train went 200 miles and the second train went 180 miles. At 6 hours the second train caught up at both being 240 miles and the 7th hour the second train passed the first train went 280 and the second train went 300 miles.
ReplyDeleteI agree with alexus the first train has traveled for 2 hours at 40mph so it would be 40×2 which would be 80 and the second train would Going at 120mph so it would 2hours before the second train passes the first
ReplyDeleteI agree with Jose. I agree with him because if you use gcf it takes 5 hours. That is why I agree with Jose.
ReplyDeleteI Agreeeee with Alexus O Becauseeee the 1st train has traveled for 2 Hrs at 40mph so it would be 40 mulitplied 2 which would be (80) and the 2nd train would going at 120mph so it would 2hrs before the second train passes the 1st train .
ReplyDeleteI agree with Alexus . The first train has traveled for 2 hours 40mph so you would have to do 40*2 witch would be 80. and the second train would be going 120mph .so it would be 2hours before the second train passes the first train
ReplyDeleteSince the 1st train is 2 hours ahead of the 2nd train you would multiply 40 mph by the time 2 hours. The 1st train has traveled 80 mph in 2 hours. For the 2nd train you would have to multiply 60 mph by the time also. The 2nd train has traveled 120 mph. In 2 hours the 2nd train will pass the 1st train.
ReplyDeleteThe first train is two hours ahead of the second train, you would multiply 40 mph by the time (2 hours). The first train has traveled 80 mph in two hours. For the second train you would have to multiply 60 mph by the time also. The second train has traveled 120 mph. In two hours the second train will pass the first train.
ReplyDeleteThe first train is going 40mph and the second train is going 60mph and it left the station 2 houers after so that means the second train will pass the first one in two
ReplyDeleteThe second train will passed the first train in 3 hour.I did 40x=120 and divide 40 from both side and get 3.I got 120 from 2x60.
ReplyDeleteI agree with Norn Htaw because she had 40x=120 and divided from both sides to get 3. She had gotten 120 from multiplying 2x60.
ReplyDeleteSince the it takes the first train is two hours ahead of the first you multiply 40x2=80. So do the same for the second train 60x2=120. So that means it will take two hours for the trains to go in the same direction.
ReplyDeletethe first is ahead of the second two by two hours. when you multiply 40 by 2 you get 80mph. the second you multiply 60 by 2 and you get 120mph. at the rate the second train is going the to pass the first train in 1 hour
ReplyDeleteThen second train would take 2 hours. I did 40x3 which got to 120. Then I did 60x2 which also got 120. So that means itd take 2 hours.
ReplyDeleteIt will take the 2nd train 2 hours to meet the first one. First I multiplied 40 by 3 and got 120 minutes. Then I multiplied 60 by 2 and got 120 minutes.
ReplyDeletethe first is ahead of the second two by two hours. when you multiply 40 by 2 you get 80mph. the second you multiply 60 by 2 and you get 120mph. at the rate the second train is going the to pass the first train in 1 hour
ReplyDeleteTrain #2 will pass train #1 in 2 hours. Train #1 travels 40mph(2 hours) which equals 80mph and train #2 travels 60mph(2 hours) which equals 120mph. Train #2 will reach LA before train one by 2 hours.
ReplyDeleteThe second train will passed the first train in 3 hour.I did 40x=120 and divide 40 from both side and get 3.I got 120 from 2x60.
ReplyDelete