A) 16-7 km
B) 18-6 km
C) 21-5 km
D) 26-7 km
Correct Answer: D
Solution :
Let B catch A with x km far from the starting point. Then, \[\frac{x}{10}=\frac{x-4\times 4}{4}\] \[\begin{align} & 4x=10x-160 \\ & 6x=160 \\ & x=26.7\,\,km \\ \end{align}\]You need to login to perform this action.
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