SOLUTION: 2 trains 2 miles apart traveling 30 mph on the same track. A fly going 60 mph travels back and forth between the two trains until all three collide. How many times did the fly fly

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Question 494431: 2 trains 2 miles apart traveling 30 mph on the same track. A fly going 60 mph travels back and forth between the two trains until all three collide. How many times did the fly fly back and forth?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
2 trains 2 miles apart traveling 30 mph on the same track. A fly going 60 mph travels back and forth between the two trains until all three collide. How many times did the fly fly back and forth?
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1st; Determine the time needed till the trains meet.
time = distance/rate = 2miles/(30+30)mph = (1/30)hr = 2 min
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2nd: Determine the distance the fly can fly in that
time.
distance = time*rate = (1/30)hr*60 mph = 2 miles
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Cheers,
Stan H.