A) \[\text{7 km}/\text{h}\]
B) \[\text{10 km}/\text{h}\]
C) \[\text{12 km}/\text{h}\]
D) \[\text{5 km}/\text{h}\]
Correct Answer: A
Solution :
Average speed of stream and boat in still water |
\[=\frac{y+x}{2}=\frac{4+10}{2}=\frac{14}{2}=7km/h\] |
So, option [a] is correct. |
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