Math CentralQuandaries & Queries


Question from Susan, a student:

The second side of a triangle is 5ft more than the length of the first side. The third side of the triangle is 10ft less than the length of the first side.
The perimeter of the triangle is 61ft. Find the lengths of each side of the triangle.
Thank you so much!


Let the length of the first side be x feet. The length of the second side is 5 feet more that this so it's x + 5 feet. What is the length of the third side? What is the sum of the lengths of the three sides? Solve for x.


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