Question

Wo trains, separated by a distance of 400 km, are running towards each other on the same track at a speed of 20 kmph. a bird takes its flight from train x and flies towards train y at a constant speed of 5 kmph. once it reaches train y, it turns and start flying back toward strain x. the bird keeps flying to and forth till both the trains collide. determine the distance

Answer 1

time taken by train to meet = time taken by bird to fly = dist/ speed
400/(20+20) = D / 5
D = 50 km