Question

Joe and Jodi go canoeing. They paddle upstream 12 miles. On the return strip (with the current) they average 3MPH faster. The total trip takes 8 hours.

1. Find their speed going upstream
2. Find the amount of time it took them to rerun to their starting point

Answer 1

time = distance/speed
So, if their upstream rowing speed is s, then
12/s + 12/(s+3) = 8
s = 3/√2 = 2.12 mi/hr

12/(3/√2 + 3) = 2.34 hours