Question

A car can finish a certain journey in 10 hours at the speed of 48 km/hr. By how much should its speed be increased so that it may take only 8 hours to cover the same distance?

Answer 1

Let the speed of car be x km/hr

Time(hrs)	10	8
Speed(km/hr)	48	x

10 x 48 = 8 x x

x = \(\frac{10\times 48}{8}\) = 60

Therefore increased speed = 60 – 48 = 12 km/hr