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# Is the perimeter of square S greater than the perimeter of

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Is the perimeter of square S greater than the perimeter of [#permalink]  24 Mar 2008, 10:18
Is the perimeter of square S greater than the perimeter of equilateral triangle T?

1) The ratio of the length of a side of S to the length of side of T is 4 : 5.

2) The sum of the length of a side of S and a side of T is 18.

Tnx.
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Re: perimeter [#permalink]  24 Mar 2008, 10:58
A

1:
say x and y are sides of square and triangle
so perimeters are 4x and 3y
given that x:y = 4:5
so ratio of perimeters = 4x/3y = 16/15 => S has a greater perimeter

2:
18 can be split into any combination - not sufficient
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Re: perimeter [#permalink]  24 Mar 2008, 11:48
A is correct.

Thank you.
Re: perimeter   [#permalink] 24 Mar 2008, 11:48
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