Boat 12 km/h still water, stream 3 km/h. Downstream speed:
A9 km/h
B12 km/h
C18 km/h
D15 km/h
Answer & Solution
Correct answer: D. 15 km/h
1. Downstream = boat + stream = 15 km/h.
_Source: 501-GMAT-Questions Section 4 / Manhattan Quant Bank_
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