A boy runs 5 minutes at a uniform speed of 10 km/hr. At what speed should he run for the next 10 mins so that the average speed comes to 12 km/hr
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3
easy question
refer to the picture for the solution
answer is 13 kmph
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Answered by
3
Hey mate!!
The answer is 18kmph
(1/12 +2v)/3 = 12
2v = 36 - 1/12
v = 432/24
v = 18kmph
Hope u understand
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