A) 9 min.
B) 14 min.
C) 15 min.
D) 19 min.
Correct Answer: C
Solution :
Ratio of speeds =2:3 \[\Rightarrow \] Ratio of times taken = 3 : 2 Given \[3x-2x=10\Rightarrow \,x=10\] \[\Rightarrow \] A would have taken 30 minutes. But if .4 walks with double the speed, then he takes half the time, i.e., 15 minutes.You need to login to perform this action.
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