Question

Leo takes 15 minutes to cycle to school at an average speed of 12 km/h. He will need only ___hours if he cycle at 18 km/h. Express your answer as a common fraction.

Answer 1

1/6 hours

Explanation:

It takes leo 15 minutes = 15/60 = 0.25 hours to circle to school with speed of

12km/hr .

Distance covered = speed*Time.

Distance covered = 12*0.25

Distance covered= 3 km

So the distance to be covered each time is 3km.

If speed increase to 18 km/he

Time taken = distance/speed

Time taken = 3/18

Time= 1/6 hour

Or 1/6 * 60 = 60/6 = 10 minutes