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OpenStudy (anonymous):
The sides of a triangle are in the ratio 3: 5: 7. If the perimeter of the triangle is 90 cm, find the length of the shortest side.
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OpenStudy (austinl):
Ok! So I believe I know how to do this.
OpenStudy (anonymous):
Let the three sides be 3x, 5x and 7x. 3x +5x + 7x = 90 solve for x and then calculate 3x
OpenStudy (austinl):
You would have to add the variable x to the problem. \[3x+5x+7x=90\] Then as @Harkirat stated, you solve for 3x after you find what x is.
OpenStudy (austinl):
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