The ratio of the speed of a boat downstream and speed of the stream is 9:1. If the speed of the current is 3 km per hr, find the distance travelled by the boat upstream in 5 hours.
A) 100 km B) 98 km C) 109 km D) 105 km
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If the ratio of speed of boat in downstream and speed of stream is 9 : 1, speed of current is 3 km per hr, What would be the distance travelled in upstream by the boat in 5 hours? Hence, option D is correct. In a river, the ratio of the speed of the stream and the speed of a boat in still water is 5 : 7.
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