Question

7. The distance between two places is 120 km. A car travelling at a certain speed can cover
the distance in 2 hours 30 minutes. By how many km/h should the speed of the car be
increased for it to take 30 minutes less to cover the distance?
S TWO
dirnatin
The
ed of​

Answer 1

Answer:

12km/h

Step-by-step explanation:

time = 2½h

distance=120km

speed=distance/time

speed=120×2/5

speed=24×2

speed=48km/h

if time=2h

speed=120/2

speed=60

than increased speed=2nd speed-1st speed

=60-48

=12km/h