During the first part of a trip, a canoeist travels 37 miles at a certain speed. The canoeist travels 7 miles on the second part or the trip at a speed 5 mph slower. The total time for the trip is 4 hours. What is the speed on each part of the trip?

Printable View

- November 25th 2008, 11:16 PMmagentaritaFind the Speed
During the first part of a trip, a canoeist travels 37 miles at a certain speed. The canoeist travels 7 miles on the second part or the trip at a speed 5 mph slower. The total time for the trip is 4 hours. What is the speed on each part of the trip?

- November 26th 2008, 08:08 AMSoroban
Hello, magentarita!

Quote:

During the first part of a trip, a canoeist travels 37 miles at a certain speed.

The canoeist travels 7 miles on the second part or the trip at a speed 5 mph slower.

The total time for the trip is 4 hours.

What is the speed on each part of the trip?

Let = speed on the first part.

Then = speed on the second part.

He went 37 miles at mph.

. . This took: . hours.

He went 7 miles at mph.

. . This took: . hours.

His total time was 4 hours: .

Now solve for . . .

Warning: We get a quadratic that doesn't factor.

. . . . . . .Use the Quadratic Formula and approximate the answer.

. - November 28th 2008, 06:09 AMmagentaritaok............