SOLUTION: The lengths of the base and a leg of an isosceles triangle are in the ratio of 3:2. the perimeter of the triangle is 105. how do I find the length of the base?

Question 368362: The lengths of the base and a leg of an isosceles triangle are in the ratio of 3:2. the perimeter of the triangle is 105. how do I find the length of the base?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Since it's isoceles you know the perimeter is,

But you also know,

Substitute in the equation above for and solve for .
Then find .
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