Question
A car can finish a certain journey in 10 hours at a
speed of 42 kmph. In order to cover the same distance in 7 hours, the speed of the car (km/h) must be increased bySolution
speed = (distance/time) distance = speed time = 10 × 42 = 420 km to cover the same distance in 7 hours speed = 420/7 = 60 Km/h increase in speed = 60 -42 =18 km/h