Question

The distance between two towns is covered in 9 hours at a speed of 60 kmph. By how much should the speed (in km/h) he increased so that 1 hour of the travelling time is saved?

Distance 60 kmh 9 hours 540 km Find a new speed for 8 hours new speed 5408 kmh 67.5 kmh Increase in speed- Increase 67.5 kmh -60 kmh 7.5 kmh

A 7.5

B 10

C 15

D 12.5

Detailed Solution