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A man rows a boat 18 kilometers in 4 hours downstream and returns upstream in 12 hours The speed of ......

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A man rows a boat 18 kilometers in 4 hours downstream and returns upstream in 12 hours. The speed of the stream (in km per hour) is :

Explanation:

Speed of stream = ½ (D - U)
Speed of boat = ½ (D + U)
Now, By using those above Formula’s
Speed of Stream= (1/2) (9/2 – 3/2) = 1.5

By: Manpreet kaur
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