| Ashutosh can row 24 km/h in still water. It takes him twice as long to row up as to row down the river. Find the rate of stream. |
A) 4 km/h
B) 18 km/h
C) 8 km/h
D) 15 km/h
Correct Answer: C
Solution :
| Let rate of stream be a km/h. |
| According to the question, |
| \[24+a=2\,\,(24-a)\] |
| \[\Rightarrow \] \[24+a=48-2a\] |
| \[\Rightarrow \]\[3a=48-24=24\] |
| \[\therefore \] \[a=\frac{24}{3}=8\,\,km/h\] |
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