A) \[18\,km\]
B) \[12\,km\]
C) \[8\,km\]
D) 10 km
Correct Answer: D
Solution :
Speed of the man \[=\frac{2}{\frac{15}{60}}=8\,km/hr\] Speed downstream \[=\frac{4}{\frac{20}{60}}=12\,km/hr\] Speed of stream \[=4\text{ }km/hr\] Distance covered by paper boat in \[2\frac{1}{2}\] hours \[=\frac{5}{2}\times 4=\]You need to login to perform this action.
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