The speed of a boat in still water is 20 kmph and the speed of the stream is 8 kmph. Then find the upstream speed of the boat.
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The speed of the boat in still water is 15 km/hr. It takes twice as long as to go upstream to a point as to return downstream to the starting point.
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Answer:
12 kmph.
Step-by-step explanation:
Speed of boat=20 kmph
Speed of stream = 8 kmph
Upstream speed of the boat = b-r
= 20-8
= 12 kmph.
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