Question

8. Amar cycles to school at a speed of 12 km/h and takes 20 minutes. If he wants
to reach the school within 15 minutes what should be his average speed?
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Answer 1

Answer:

16 km/h

Step-by-step explanation:

So, 20 minutes is 1/3 hour and at a speed of 12 km/h, Amar can cover 12 * 1/3 = 4 km/h distance. So, his school is at the distance of 4 km.

Now, to cover the 4 km distance in 15 minutes which is 1/4 of the one hour, he will require

v = 4 / (1/4) = 16 km/h.