Question 363670
89 miles at a certain speed. the canoist travels 12 miles on the second
 part of the trip 5 mph slower.
the total time for trip was 4 hours
What was the speed on the first part of the trip
:
obviously, the 1st part is not 89 miles, assume it's 8 miles
Let s = his speed on the 1st part
then
(s-5) = his speed on the last 12 mi
:
Write a time equation: Time = dist/speed
{{{8/s}}} + {{{12/((s-5))}}} = 4
:
This is the equation, if the first part is not 8 miles, replace it, solve for s