If a boat goes 5 km upstream in 50 minutes and the speed of the stream is 3 kmph, then the speed of
the boat in still water is	Answers: A) 9 kmph B) 13 kmph C) 14 kmph D) 15 kmph E) None of these
Explanation:   Rate upstream = (5/50)*60= 
<gadget id="calculator">(5/50)*60</gadget>
<output>6</output>
6 kmph.   Speed of stream= 3 kmph.   Let speed in still water is x km/hr   Then, speed upstream = (x ï¿½3) km/hr.   x-3 = 6 or x = 9 kmph   9 kmphnswer: 9 kmph
<result>A</result>
If a boat goes 5 km upstream in 50 minutes and the speed of the stream is 3 kmph, then the speed of
the boat in still water is