5. A boat covers 32 Km upstream and 36 Km downstream in 7 hours.
Also, it covers 40 Km upstream and 48 km downstream in 9 hours.
The speed of the boat in still water is:
(1) 2 km/hr
(2) 10 km/hr
(3) 12 km/hr
(4) None of these
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itni high level maths mere class ne nhi padhai gyi hai...so sry
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