Asked by Anonymous
Gone fishing. Debbie traveled by boat 5 miles upstream to
fish in her favorite spot. Because of the 4-mph current, it
took her 20 minutes longer to get there than to return. How
fast will her boat go in still water
fish in her favorite spot. Because of the 4-mph current, it
took her 20 minutes longer to get there than to return. How
fast will her boat go in still water
Answers
Answered by
MathMate
Distance = D = 5 miles
Still water speed = S
current speed = 4 m.p.h.
Time to go upstream,T1 = 5/(S-4)
Time to go downstream, T2 = 5/(S+4)
Difference,
T1-T2 = 20/60 hour
Can you take it from here?
Still water speed = S
current speed = 4 m.p.h.
Time to go upstream,T1 = 5/(S-4)
Time to go downstream, T2 = 5/(S+4)
Difference,
T1-T2 = 20/60 hour
Can you take it from here?
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