A) 32.5 kmph
B) 30 kmph
C) 65 kmph
D) 60 kmph
Correct Answer: A
Solution :
Rate upstream of boat \[=\frac{75}{3}=25\]kmph Rate downstream of boat \[=\frac{60}{1.5}=40\]kmph \[\therefore \] Speed of boat in still water\[=\frac{1}{2}(25+40)\] \[=\left( \frac{1}{2}\times 65 \right)kmph\] \[=32.5\,kmph\]You need to login to perform this action.
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