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?

Answer Posted / s chand

let total distance be 420 miles
15t+20t=420
t=12hr
they collide after 12hr
so distance covered by bird=12*25=300miles

Is This Answer Correct ?    15 Yes 14 No



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