SOLUTION: the perimeter of an isosceles triangle is 40cm. if 3 times the base is equal to 4 times the congruent sides. find the length of each side of triangle.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: the perimeter of an isosceles triangle is 40cm. if 3 times the base is equal to 4 times the congruent sides. find the length of each side of triangle.       Log On


   

Question 869989: the perimeter of an isosceles triangle is 40cm. if 3 times the base is equal to 4 times the congruent sides. find the length of each side of triangle.


Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
base=b
congruent side =a
3b=4a
b=(4a/3)
a+a+(4a/3)=40
10a/3=40
10a=120
a=12 cm
b=(4/3)a
=(4/3)12
b=16 cm