a 126. Speed of a boat in still water is 5R% more than the speed of stream of the river in which it will sail. The boat takes 175% more time in going upstream 44 km then downstream 32 km. Find R.
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Step-by-step explanation:
Speed of rowing by a person =5 km/hr.
Speed of stream =x km/hr
Upstream Speed =(5−x) km/hr
Downstream speed =(5+x) km/hr
⇒ 40/5−x = 3×40/5+x
⇒5+x = 15-3x
⇒4x = 10
⇒x = 25 kmkhr
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