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Boats and Streams question bank (Quantitative Aptitude)

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Q1.

$A$ boat goes $14 \ km$ upstream in $42 \ minutes$. The speed of the stream is $4 \ km$. The speed of the boat in still water is .......... $km/h$.

(A)
$24$
(B)
$25$
(C)
$30$
(D)
$23$
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Q2.

The speed of a boat in still water is $7\, km/h$. If its speed in downstream is $10\, km/h$,then the speed of the stream is .......... $km/h$.

(A)
$7$
(B)
$3$
(C)
$10$
(D)
$6$
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