# How much Speed must be Increase by the Car

A car can finish a certain journey in 10 hours at the speed of 56 km/hr, In order to cover the same distance in 7 hours, the speed of the car must be increases by

- 12 km/hr
- 16 km/hr
- 24 km/hr
- 18 km/hr

**Answer: (b) 16 km/hr
Explanation:-
A car can finish a **journey = 10 hrs

Speed of the car = 56 km/hr

therefore distance of the journey = 10 x 56 = 560 km

Other car finish a journey = 7 hr

then, the speed of the car = 560/7 = 80 km/hr.

Increased speed = 80 – 56 = 16 km/hr

Hence, the speed of the car must be increased by 16 km/hr.