Posted by Anonymous on .
A rectangle has length and width in the ratio of 5:9. If the perimeter is 280, what is the length of the rectangle?

geometry 
Reiny,
let the width be 5x and the length 9x
P = 2l + 2w = 10x + 18x = 28x
28x = 280
x = 10
width is 50, length is 90