SOLUTION: In an isoceles triangle, the length of the third side is 25% of one of the equal sides. Find the length of each side when perimeter is equal to 135 ft.

Question 937762: In an isoceles triangle, the length of the third side is 25% of one of the equal sides. Find the length of each side when perimeter is equal to 135 ft.

Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = length of third side
y = length of each equal side
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x + 2y = 135
x = 0.25y
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put the system of linear equations into standard form
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x + 2y = 135
x - 0.25y = 0
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solution:
x = length of third side = 15 ft
y = length of each equal side = 60 ft
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