A) 90 km
B) 72 km
C) 36 km
D) None of these
Correct Answer: B
Solution :
Let distance between A and B \[=x\,\text{km}\] By given condition, \[\frac{x}{12}-\frac{x}{18}=2\] \[\Rightarrow \] \[6x=2\times 18\times 12\] \[\Rightarrow \] \[x=\frac{2\times 18\times 12}{6}=72\,\text{km}\] Hence, required distance \[=72\,\text{km}\]You need to login to perform this action.
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