1.

Two boats A and B cover 108 km. From two places located at a distance, they leave towards each other. The speed of boats A and B in still water are 12 km./h and 15 km./h respectively. After how much time will they meet each other if A is moving with the current and B in the opposite direction?

A. 2.4 hours
B. 4 hours
C. 9 hours
D. 6 hours
Answer» C. 9 hours


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