SOLUTION: The perimeter of a triangle is 57.The first side is twice the length of the second side.The third side is seven more than the second side.What is the length of each side?
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Question 165382: The perimeter of a triangle is 57.The first side is twice the length of the second side.The third side is seven more than the second side.What is the length of each side?
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
A+B+C=57 A=2B and C=B+7 so substituting A=2B and C=B+7 into the 1st equation we get (2B)+B+(B+7)=57 so 4B=50 B=12.5 so A=2(12.5)=25 and C=12.5+7=19.5
So sides are 12.5,19.5,25 in length
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