<PRE><B>Question 580241</B>
A ratio of 3:1 means that width is x and the length is 3x


P = 2L + 2W


24 = 2(3x) + 2x


24 = 6x + 2x


24 = 8x


24/8 = 8x/8


3 = x


x = 3



So the width is 3 and the length is 3*3 = 9</PRE>