Question

A car with a speed 60km/hr takes 8 hours to travel some distance.What should be the increase in the speed if the same distance is to be covered in 7 and half hours?

Answer 1

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Answer 2

Given :

Speed of car = 60 km / hr

Time Taken = 8 hr

We know :

Speed = Distance / Time

Distance = Speed * Time

Distance =   60 * 8

Distance = 480 km

Now,

Distance to be covered = 480 km

Time Taken = 7.5 hr

Speed = Distance / Time

Speed = 480 / 7.5

Speed = 64 km / hr

Thus, the new speed of car should be 64 km / hr

Increase in speed = Increased speed - Original Speed

Increase in speed = 64 - 60

Increase in speed = 4 km / hr