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Two trains start from City A and travel towards City B, which is at a

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Director
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Two trains start from City A and travel towards City B, which is at a  [#permalink]

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New post 21 Jun 2019, 09:57
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Two trains start from City A and travel towards City B, which is at a distance of 100 miles from City A, at the same time with an average speeds of 60 miles per hour and 80 miles per hour respectively. A train starts from City B at the same time and travels towards City A at an average speed of 70 miles per hour. How far from city B is the slower train starting from City A when the faster train starting from City A meets the train starting from City B?


A. 30 miles
B. 40 miles
C. 50 miles
D. 60 miles
E. 70 miles
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Re: Two trains start from City A and travel towards City B, which is at a  [#permalink]

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New post 21 Jun 2019, 10:02
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The fastest train from City A and the train from City B meet at 100/(80+70) hours. 2/3 or 40 min.
In 40 minutes, the slower train will have traveled 40 miles. 60 miles remaining from city B.

D is the answer.
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Re: Two trains start from City A and travel towards City B, which is at a  [#permalink]

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New post 25 Jun 2019, 13:51
Chethan92 wrote:
The fastest train from City A and the train from City B meet at 100/(80+70) hours. 2/3 or 40 min.
In 40 minutes, the slower train will have traveled 40 miles. 60 miles remaining from city B.

D is the answer.



Hi

Sorry I think in 40 minutes the slower train travels 46 miles not 40 miles. So there will be 54 miles remaining which means approximately 50 miles if I am not mistaken.
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Re: Two trains start from City A and travel towards City B, which is at a  [#permalink]

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New post 26 Jun 2019, 00:59
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The speed of the slower train from City A is 60 mph which means it travels 1 mile in 1 minute so it will travel 40 miles in 40 minutes.
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Re: Two trains start from City A and travel towards City B, which is at a  [#permalink]

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New post 02 Oct 2019, 18:57
fast train from A and B meet at ; 100/150 ; 0.66 hrs
so distance covered by slow train of A ; 0.66*60 ; 40 miles
so it is 100-40 ; 60 miles away from City B
IMO D


kiran120680 wrote:
Two trains start from City A and travel towards City B, which is at a distance of 100 miles from City A, at the same time with an average speeds of 60 miles per hour and 80 miles per hour respectively. A train starts from City B at the same time and travels towards City A at an average speed of 70 miles per hour. How far from city B is the slower train starting from City A when the faster train starting from City A meets the train starting from City B?


A. 30 miles
B. 40 miles
C. 50 miles
D. 60 miles
E. 70 miles
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Re: Two trains start from City A and travel towards City B, which is at a   [#permalink] 02 Oct 2019, 18:57
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