Muskan can row 16 kmph in still water It takes her thrice as long to row up as to row down the river...........

Quant (SSC) Boats and Streams

Muskan can row 16 kmph in still water. It takes her thrice as long to row up as to row down the river. Find the difference between her speed in still water and that of the stream.

8 kmph

16 kmph

24 kmph

12 kmph

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Explanation:

Let Muskan speed upstream be x kmph
So, her speed downstream will be 3x kmph
According to the question,
x + 3x /2 = 16
⇒ x = 8 kmph
So, upstream speed = x = 8 kmph
Downstream speed = 3x = 24 kmph
Speed of stream = 24 - 8 /2 = 8 kmph
∴ Difference between speed of Muskan and that of stream = 16 – 8 = 8 kmph.