Question

a boy runs for 20 minutes at a uniformspewd of 18 kilometer per hour . at what speed should he run for the next 40 minutes so that the average speed comes 24 kilometers per houe​

Answer 1

Answer:

initial speed of boy =18 km/h

final speed =??

average speed =24 km/h

average speed= (initial +final) /2

24 = (18+??)/2

48 =18+??

48-18=??

30km/h =??

so the final speed of the boy is 30 km/h

Explanation:

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