SOLUTION: If the perimeter of a rectangular swimming pool is 118 feet, find the length and width when the length is 1/3 of the width plus 7. (Use P=2L+2W) I can not seem to figure out the

Question 42288: If the perimeter of a rectangular swimming pool is 118 feet, find the length and width when the length is 1/3 of the width plus 7. (Use P=2L+2W) I can not seem to figure out the correct equation.
Answer by PaulAllen65270(19) (Show Source): You can put this solution on YOUR website!
Width is x; length would be so the equation is
You can then divide everything by 2
Then you can multiply everything by 3 to get rid of the fraction
Now combine the x terms
Isolate the x on one side of the equals by subtracting 21 from both sides
Divide both sides by 4
This is the width to find the length you would need to substitute this in the length formula.
Length equals 20 make sure you label everything.
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