A) \[3,1.5\]
B) \[3,2\]
C) \[\text{3}.\text{5},\text{2}.\text{5}\]
D) \[3,1\]
Correct Answer: A
Solution :
[a] Downrate \[=\frac{9}{2}=4.5\,km/hr\] |
Uprate \[=\frac{9}{6}=1.5\,km/hr\] |
Speed of the boat \[=\frac{(4.5+1.5)}{2}=3\,km/hr\] |
Speed of the current |
\[=\frac{(4.5+1.5)}{2}=1.5\,km/hr\] |
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