Question

A motor-cycle covers 90 km with a speed of 45 km/hr.

Average speed of whole journey 65 kmhr Using the formula, average speed 2xyx y x speed of first 90 km 45 kmhr 65 2 45 y45 y 117 kmhr

find the speed of the motor-cycle for the next 90 km journey so that the average speed of the whole journey will be 65 km/hr.

A 117 km/hr

B 150 km/hr

C 120 km/hr

D 88 km/hr

Practice Next

More Time and distance Questions

Solution