A cruise boat travels 48 miles downstream in 3 hours and returns upstream in 6 hours. Find the rate of the stream

Answer 1

distance = rate x time
downstream 48 mi in 3 hours so rate = 16 mi/hr.
Let B = boat speeed and S = stream speed so rate = 16 mi/hr = B + S
Upstream is 49 mi in 6 hours or 48/6 8 mi/hr
or B-S = 8
Two equation in two unknowns.
B+S = 16
B-S = 8
Solve for B and S (although S is what you want). Check my work.

Answer 2

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