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A boat takes a total of 4 hours to travel 14 km upstream and 36 km downstream. It takes 5 hours to travel 20 km upstream and 24 km downstream. Let the...

Banking RBI Grade B Prelims Medium Number System (including HCF LCM) MCQ

Question

A boat takes a total of 4 hours to travel 14 km upstream and 36 km downstream. It takes 5 hours to travel 20 km upstream and 24 km downstream. Let the speed of the boat in still water be xx km/h and the speed of the current be yy km/h.

Using the given information, find the speed of the boat in still water.

Options

A.

14 km/h14 \text{ km/h}

B.

75235≈21.48 km/h\frac{752}{35} \approx 21.48 \text{ km/h}

C.

16 km/h16 \text{ km/h}

D.

18 km/h18 \text{ km/h}

boats and streamsspeedupstreamdownstreamalgebra

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