Question 668685: A triangle has a peremiter of 165 cm. The first side is 65 cm less than twice the second side. The third side is 10 cm less than the second side. Write and solve an equation to find the length of each side of the triangle.
Answer by swincher4391(1107)   (Show Source):
You can put this solution on YOUR website! For sides a,b,c perimeter = a+b+c
Let a,b,c be the 1st,2nd,3rd sides respectively.
a = 2b - 65
c = b - 10
a+b+c = 2b -65 + b + b-10 = 165
4b = 240
b = 60
If b = 60 then:
a = 2(60) - 65 = 55
c = 60-10 = 50
So our sides are 55,60,50.
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