Q. A boat goes 4 km upstream and 4 km downstream in 1 hour. The same boat goes 5 km downstream and 3 km upstream in 55 minutes. What is the speed (in km/hr) of boat in still water? - Study24x7
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3633 followers study24x7 05 May 2020 11:37 AM study24x7 study24x7

Q. A boat goes 4 km upstream and 4 km downstream in 1 hour. The same boat goes 5 km downstream and 3 km upstream in 55 minutes. What is the speed (in km/hr) of boat in still water?

A

6.5

B

7.75

C

9

D

10.5

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