Question
A windmill rotates 60 times in 1.5 hours. Find the
number of rotations made by the windmill in 36 minutes.Solution
ATQ, Number of rotations made by the windmill in 90 minutes = 60 Required no of rotation = (60/90) × 36 = 24
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A train of length 150 m passes a platform of length 350 m in 25 s.
Find: (i) speed of the train in km/h, (ii) time to pass a man standing still.
