Question

A boy runs for 10 minutes at uniform speed 9km/h. At what speed should he run for the next
20 minutes so that the average speed comes to 12km/ h?

Answer 1

Answer:

The Run for next 20 minutes should be at 13.5 km/hr so that the average speed comes to 12 km/hr.

Answer 2

Answer:

Thanks.

Step-by-step explanation:

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