Question

A canoe in still water travels at a rate of 12 miles per hour. The current today is traveling at a rate of 2 miles per hour. If it took an extra hour to travel upstream, how far was the trip one way?
since time = distance/speed,

d/(12-2) = d/(12+2) + 1
d = 35 miles

check:
35/10 = 3.5
35/14 = 2.5

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