Question
A man can swim downstream in 12 minutes covering a
distance of 600 meters. He takes 15 minutes to cover the same distance upstream. Find the speed of the stream in meters per minutes.Solution
Downstream speed = 600 ÷ 12 = 50 m/min. Upstream speed = 600 ÷ 15 = 40 m/min. Speed of stream = (Downstream speed - Upstream speed) ÷ 2 = (50 - 40) ÷ 2 = 10 ÷ 2 = 5 m/min. Correct Option: e) 5 m/min
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Branch of physics dealing with the properties of sound
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IMITATION
