algebra
posted by lisa on .
During the first part of a trip a canoeist travels 71 miles at a certain speed. The canoeist travels 5 miles on the second part of the trip at the speed 5mph slower. The total time for the trip is 4hrs. Waht was the speed on each part of the trip

time= time1 + time2
4hrs=71/speed1+5/(speed15)
solve for speed1.