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
∵ Speed of the car = 48km/h
Time taken by car = 10h
∴ Distance = Speed × time = 48 × 10 = 480km
If car need to cover 480km in 8h, then
Required speed = 
km/h
Hence, option (a) is correct.
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