A boy ran from 18 minutes at a uniform speed of 18 kilometre per hour at what speed should he run the next 40 minutes so that the average speed is 24 km/h
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Let's assume that the boy runs at a speed of x km/h for 40 minutes.
Total distance covered= 18 km/h * (18/60) + x(40/60)
Total time= 58/60
Average speed= 24 = Total Distance covered / Total time
Putting the values and solving for X, we get X= 26.2 km/h
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Answer:
x ki value 26.2 km /hr is the correct answer
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