The speed of a boat downstream is 15 km/hr and the speed of the stream is 1.5 km/hr. The speed of the boat upstream is ?

The speed of a boat downstream is 15 km/hr and the speed of the stream

1.	The speed of a boat downstream is 15 km/hr and the speed of the stream is 1.5 km/hr. The speed of the boat upstream is ?
A.	13.5 km/hr
B.	16.5 km/hr
C.	12 km/hr
D.	8.25 km/hr
Answer» D. 8.25 km/hr

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