A walks at 4 km/h and 5 hours after his start, B cycles after him at 10 km/h. How far from the start does B catch up with A?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 33.33 km
Given that
The speed of A is 4 km/h
After 5 hours, A walks a distance of 4 × 5 = 20 km
Now, B cycles after him at 10 km/h
Then, B takes time to catch him, which is 20/(10 - 4) = 20/6 hours
Hence, B covers the distance to catch him is 10 × 20/6 = 200/6 = 33.33 km