SOLUTION: The sides of a triangle are in the ratio 3:4:5. What is the length of each side if the perimeter of the triangle is 30 cm?

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Question 206904This question is from textbook Prentice Hall Mathematics: Alegbra 2
: The sides of a triangle are in the ratio 3:4:5. What is the length of each side if the perimeter of the triangle is 30 cm? This question is from textbook Prentice Hall Mathematics: Alegbra 2

Found 2 solutions by rfer, stanbon:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
3x=7.5
4x=10
5x=12.5
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3x+4x+5x=30
12x=30
x=2.5

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The sides of a triangle are in the ratio 3:4:5. What is the length of each side if the perimeter of the triangle is 30 cm?
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Equation:
3x + 4x+5x = 30 cm
12x = 30
x = 5/2
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3x = 3*(5/2) = 15/2
4x = 4*5/2 = 10
5x = 5*(5/2) = 25/2
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Cheers,
Stan H.