anonymous
  • anonymous
Train A and B are traveling in the same direction on parallel tracks. Train A is traveling at 80 miles per hour and train b is traveling at 96 miles per hour. Train A passes a station at 1:10 a.m. if train B passes the same station at 1:25 a.m., at what time will train b catch up to train A.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
I love mechanics. Find out how far the first train has travelled by 1:25. The second train has to 'catch up' this distance, and it is catching up at a speed of 96-80 = 16mph.
anonymous
  • anonymous
how do i find that out??
anonymous
  • anonymous
Between 1:10 and 1:25, 15 minutes passes - 1/4 hours distance = speed x time -> train A travels 80 x (1/4) = 20miles in this time. From 1:25, train B catches up at 96 - 80 = 16 mph. It needs to catch up 20 miles at 16mph relative speed, so the time is (20/16) hours after 1:25

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anonymous
  • anonymous
that is so confusing?!?!
anonymous
  • anonymous
Just do it the old fashioned way if my mechanics is too elegantly performed for you.
anonymous
  • anonymous
lol i dont know the old fashioned way either
anonymous
  • anonymous
would it be 3:10 am ??

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