Question

Two trains, each having a speed of 40 and 60 km/h respectively , are headed towards
each other on the same straight track. A bird that can fly 80 km/h
flies off the front of one train when they are 60 km apart and heads
directly for the other train. On reaching the other train, the bird
flies directly back to the first train, and so forth. (We have no idea
why a bird would behave in this way.) What is the total distance the
bird travels before the trains collide?

Answer 1

Answer:

The answer is 240km/h speed of the bird

Explanation:

just do LCM

20 I60,80

     I  3 ,  4

multiply it done