A boat rows 16 km up the stream and 30 km down stream taking 5 h each time. The velocity of the current.

1.1 km/h

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1.2 km/h

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1.4 km/h

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1.5 km.h

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Solution

The correct option is C 1.4 km/h
$\frac{16}{S_{B} - S_{S}} = 5 h o u r \frac{30}{S_{B} + S_{S}} = 5 h o u r 16 = 5 S_{B} - 5 S_{S} \dots (i) 30 = 5 S_{B} + 5 S_{S} \dots (i i) 14 = 10 S_{S} S_{S} = 1.4 k m / h r$

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