A) 4
B) 5
C) 10
D) 2
Correct Answer: B
Solution :
If the required distance be \[=\text{ }x\]km, then \[\frac{x}{4}-\frac{x}{5}=\frac{10+5}{60}\] \[\Rightarrow \frac{5x-4x}{20}=\frac{1}{4}\] \[\Rightarrow \frac{x}{20}=\frac{1}{4}\] \[\Rightarrow x=\frac{1}{4}\times 20=5\] km.You need to login to perform this action.
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