SOLUTION: The perimeter of a triangle is 240 mm. If the longest side of the triangle is seven times the length of the smallest side and the other side is is four times the length of the smal

Question 299065: The perimeter of a triangle is 240 mm. If the longest side of the triangle is seven times the length of the smallest side and the other side is is four times the length of the smallest side, find the lengths for all three sides.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
240=7X+4X+X
12X=240
X=240/12
X=20 mm. ans. for the shortest side.
4*20=80 mm. is the middle length side.
7*20=140 mm. ans. for the largest side.
20+80+140=240
240=240

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