A walks at 30 kmph and 30 hours after his start, B cycles after him at 40 kmph.

A walks at 30 kmph and 30 hours after his start, B cycles after him at 40 kmph. How far from the start does B catch up with A?

Quiz

Answer/Solution

2500km

Steps/Work

Suppose after x km from the start B catches up with A. Then, the difference in the time taken by A to cover x km and that taken by B to cover x km is 30 hours.
x/30 - x/40 = 30
x = 3600 km
Answer is D

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A walks at kmph and hours after his start, b cycles after him at kmph. How far from the start does b catch up with a?

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