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?

Algebra ->  Triangles -> 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?      Log On


   

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) About Me  (Show Source):
You can put this solution on YOUR website!
Since it's isoceles you know the perimeter is,
B%2BL%2BL=105
But you also know,
B%2FL=3%2F2
B=%283%2F2%29L
Substitute in the equation above for B and solve for L.
Then find B.