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The ratio of the speed of boat ‘A’ in still water, the speed of boat ‘B’ in still water and the speed of the current is 8:6:2, respectively. If the time taken by boat ‘A’ to travel (5D – 45) km downstream is equal to the time taken by boat ‘B’ to travel (D + 80) km upstream, then find the value of ‘D’.

A 48

B 88

C 98

D 78

E None of these

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