A) 5 km/h
B) 8 km/h
C) 7 km/h
D) 10 km/h
Correct Answer: D
Solution :
Speed of boat in still water \[=2\left( \frac{6+4}{6-4} \right)\,\,km/h=2\times \frac{10}{2}=10\,\,km/h\]You need to login to perform this action.
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