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A boat takes 5 hours for travelling downstream from point A to point B and coming back to point C at 3/4th of total distance between A and B from point B. If the velocity of the stream is 3 kmph and the speed of the boat in still water is 9 kmph, what is the distance between A and B?
24 km
32 km
27 km
21 km
Solution: Let total distance from A to B= d km, So CB = 3d/4 km So d/(9+3) + (3d/4)/(9-3) = 5 Solve, d = 24 km
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