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A boat goes 2 km upstream and 3 km downs...

A boat goes 2 km upstream and 3 km downstream in 45 minutes while it goes 3 km upstream and 9 km downstream in 90 minutes. Whatis the speed (in km/hr) of boat when going down stream?

A

9

B

10.5

C

12

D

9.5

Text Solution

Verified by Experts

The correct Answer is:
C
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