Question

11. A car covers a distance in 30 minutes with an average speed of 60 km per hour. What should be the average speed to cover the same distance in 20 minutes ? ​

Answer 1

Answer:

90 km/hr

Step-by-step explanation:

Average speed=total distance/total time

30 minutes=0.5 hour

20 min=1/3hour

I CASE:-

60=X/0.5

X=30 KM

II CASE:-

A.S=30/1/3

=30x3

=90

so, our answer is 90 km/hr