A ship, whose speed in 15 km/hr in still water goes 30 km downstream a – McqOptions

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1.	A ship, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. What is the speed of the stream in km/hr?
A.	4
B.	6
C.	5
D.	10
Answer» D. 10

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