Question

By travelling at a speed of 48 kilometres per hour, a car can finish a certain journey in 10 hours. To cover the same distance in 8 hours, the speed of the car should be

(a) 60 km/h (b) 80 km/h (c) 30 km/h (d) 40 km/h

Answer 1

(a) 60 km/h

Explanation: 

Speed of car = 48 km/hr

Time taken = 10 hr

As we know,

Distance = speed × time = 48 × 10 = 480 km

Speed required by car to cover 480 km in 8 hours = 480/8 = 60 km/hr.