SOLUTION: The ratio of a rectangular field is 5:4. The perimeter of the field is 324 meters. What are the dimensions? My attempt: 324=2(5)+2(4) 324=18 divide by 18 X=36

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Question 450951: The ratio of a rectangular field is 5:4. The perimeter of the field is 324 meters. What are the dimensions?
My attempt:
324=2(5)+2(4)
324=18 divide by 18
X=36
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
l%2Fw+=+5%2F4
==> l+=+%285%2F4%29w
Now, 324 = 2l + 2w ==> l + w = 162
==> %285%2F4%29w+%2B+w+=+162
==> %289%2F4%29w+=+162
==> w = 72 meters, and l+=+%285%2F4%29%2A72+=+90 meters.