One train leaves Los Angeles at 15mph heading for New York.
Another train leaves from New York at 20mph heading for Los
Angeles on the same track. If a bird, flying at 25mph,
leaves from Los Angeles at the same time as the train and
flies back and forth between the two trains until they
collide, how far will the bird have traveled?
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Answer Posted / rakesh and priyanka
Solution
Apply approximation.
Find the time (t hours) taken for both trains to meet:
15t + 20t = 5000
35t = 5000
35t / 35 = 5000 / 35
t = 1000/7
Find the approximated distance flied by the bird:
25 * (1000/7) = 25000/7
The distance is 25000/7 miles
| Is This Answer Correct ? | 32 Yes | 9 No |
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