A) 19 min
B) 38 min
C) 51 min
D) 57 min
Correct Answer: B
Solution :
Ratio of the speeds of A and B = A : B = 2 :1 = 6 : 3 B : C = 3 : 1\[\therefore \]A : B : C = 6 : 3 : 1 \[\therefore \] Ratio of their time taken \[=\frac{1}{6}:\frac{1}{3}:1=1:2:6\] \[\therefore \] Time taken by \[\text{B}=\left( \frac{2}{6}\times 114 \right)\]min = 38 minYou need to login to perform this action.
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