SOLUTION: A train leaves Danielsville junction in travels north at a speed of 75 mph two hours later a second train leaves on my parallel track and travels north at 125 mph how far from the
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Question 1050579: A train leaves Danielsville junction in travels north at a speed of 75 mph two hours later a second train leaves on my parallel track and travels north at 125 mph how far from the station will then meet Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! In 2 hrs, the 1st train's head start is: mi
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Start a stopwatch when the 2nd train leaves
Let = time in hrs on the stopwatch when
they meet
Let = distance in miles the 2nd train
travels until they meet
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Equation for 1st train:
(1)
Equation for 2nd train:
(2)
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substitute (2) into (1)
(1)
(1)
(1) hrs
and
(2)
(2)
(2) mi
They will meet 375 mi from the station
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check:
(1)
(1)
(1)
(1)
OK
