A car can finish a certain journey in 10 hours at a speed of 42 kmph. In order t

Question

A car can finish a certain journey in 10 hours at a speed of 42 kmph. In order to cover the same distance in in 7 hours, the speed of the car (km/h) must be increased by :

Options:

A . 12 km/hr

B . 15 km/hr

C . 18 km/hr

D . 24 km/hr

Answer: Option C

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