IBPS Clerk Prelims Model Paper 5

Since both of them are travelling the same distance, so their speeds will be inversely proportional to time.
Ratio of speeds = 2 : 3
Ratio of time = 3 : 2
A takes 10 minutes more than B.
3x – 2x = 10 minutes
A’s time = 30 minutes
A covers the distance in 30 minutes, if his speed is x.
⇒ He will cover the same distance in 15
minutes, if his speed doubles, i.e. 2x.