By travelling at a speed of 48 kilometres per hour,

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

Solution:

(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.

By travelling at a speed of 48 kilometres per hour,

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