Discussion of Question with ID = 093 under Boats-and-Streams

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A boat has a downstream speed of 16 km/h and an upstream speed of 6 km/h. What is the speed of the stream?


5 kmph.


6 kmph.


4 kmph.


8 kmph.

Ans: a

By the shortcut method, the speed of the stream is half of the difference between the downstream and upstream speeds of the boat. So the required speed = ${16 - 6}/2$ = 5 km/h.

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