A boat goes 12 km upstream in 48 minutes. The speed of stream is 2 km/hr. The speed of boat in still water is ?

A boat goes 12 km upstream in 48 minutes. The speed of stream is 2 km/

1.	A boat goes 12 km upstream in 48 minutes. The speed of stream is 2 km/hr. The speed of boat in still water is ?
A.	13 km/hr
B.	2.25 km/hr
C.	17 km/hr
D.	15 km/hr
Answer» D. 15 km/hr

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