SOLUTION: A triangle has side lengths in the ratio 3 : 4 : 5. If the perimeter of the triangle is 84cm, what is the length of the shortest side?

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Question 876180: A triangle has side lengths in the ratio 3 : 4 : 5. If the perimeter of the triangle is 84cm, what is the length of the shortest side?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Hint: solve the equation for x

3x + 4x + 5x = 84

once you find x, compute 3x to get your final answer