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

Answer:

480

Step-by-step explanation:

car finish 10×48=840

Answer 2

Answer:

12km/hr

Step-by-step explanation:

if car travel 10 hours with the speed of 48km/hr

then it will cover distance

Distance (d) = 48 * 10 = 480km

and if car wants to cover same distance in 8 hours

then it will take

speed (s) = distance (d) / time (t)

I.e s=480/8 = 60km/hr

so the increased speed = 60 - 48 = 12km/hr