SOLUTION: If one side of a triangle is 1/3 the perimeter, second is 7cm and third is 1/5 the perimeter, what is the perimeter of the triangle?

Algebra ->  Triangles -> SOLUTION: If one side of a triangle is 1/3 the perimeter, second is 7cm and third is 1/5 the perimeter, what is the perimeter of the triangle?       Log On


   

Question 612590: If one side of a triangle is 1/3 the perimeter, second is 7cm and third is 1/5 the perimeter, what is the perimeter of the triangle?

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
p=perimeter
p/3 + 7 + p/5 = p
5p+105+3p=15p Multiply each side by 15.
7p=105
p=15 cm
.
Ed