what is the time taken by a water cycle in traveling a distans of 78km .when it's speed is 12m/sec
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etihash pat kora proyo jon keno
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A person rides a bicycle round a circular path of radius 50 m. The radius of the wheel of the bicycle is 50 cm. The cycle comes to the starting point for the first time in 1 hour. What is the number of revolutions of the wheel in 15 minutes?
20
25
30
35
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