SOLUTION: During the first part of a canoe trip, covered 81 miles at a certain speed. He then traveled 18 mile at a speed that was 5 slower. If the total time for the canoe trip was 5 hr, wh

Question 159072: During the first part of a canoe trip, covered 81 miles at a certain speed. He then traveled 18 mile at a speed that was 5 slower. If the total time for the canoe trip was 5 hr, what was his speed on each part of the trip?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
For each part of the trip,
and,

given:
mi
mi
mi/hr
hr
hr
------------------

(1)

------------------
note that , so

Substituting from (1) above,

multiply both sides by

rearranging,

Solve this using the quadratic equation to find
Then use that to find and

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