SOLUTION: Two sides of a triangle are equal. Each of the two sides is twice the length of the third side. The perimeter is 90 meters. Find the lenght of each side.

Algebra ->  Algebra  -> Coordinate Systems and Linear Equations -> SOLUTION: Two sides of a triangle are equal. Each of the two sides is twice the length of the third side. The perimeter is 90 meters. Find the lenght of each side.      Log On

Ad: You enter your algebra equation or inequality - Algebrator solves it step-by-step while providing clear explanations. Free on-line demo .
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

   

Question 61976: Two sides of a triangle are equal. Each of the two sides is twice the length of the third side. The perimeter is 90 meters. Find the lenght of each side.
Answer by ankor@dixie-net.com(12692) About Me  (Show Source):
You can put this solution on YOUR website!
Two sides of a triangle are equal. Each of the two sides is twice the length of the third side. The perimeter is 90 meters. Find the length of each side.
:
Let the 3rd side = x
Then the equal sides = 2x
:
x + 2x + 2x = 90
5x = 90
x = 90/5 = 18 is the length of the 3rd side.
:
Equal sides: 2(18) = 36
:
Check solution: 18 + 36 + 36 = 90