A) 3, 1.5
B) 3, 2
C) 3, 2.5
D) 3, 1
Correct Answer: A
Solution :
Speed of boat in downstream\[=\frac{9}{2}=4.5\,\,km/h\]Speed of boat in upstream \[=\frac{9}{6}=1.5\,\,km/h\] \[\therefore \] Speed of boat in still water \[=\frac{1}{2}(4.5+1.5)=3\,\,km/h\] Speed of current \[=\frac{1}{2}(4.5-1.5)=\frac{3}{2}=1.5\,\,km/h\]You need to login to perform this action.
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