Question 57290: The length of a rectangular swimming pool is 10 feet longer than the width. If the perimeter is 68 feet, then what is the width of the rectangular swimming pool?
Answer by rcmcc(152)   (Show Source):
You can put this solution on YOUR website! you can solve this question by making a simple linear equation.
let the width of the pool be x
since the length is 10 feet longer than the width, it can be stated as;
x+10
But when calculating X you must also calculate the opposing side, so simply multiply your equation by 2 to calculate in all the sides.
you must form an equation, take the length, and add to the width and multiply both by 2.
so.
2(x+10)+2(x)=68
now you can solve for X,
first you mus expand the brackets
2X+20+2X=68
now you can combine like terms, and subtract 20 from each side.
4X=48
you divide out 4 to isolate X
x=12
the width of the pool is 12 feet and the length is 22 feet (12+10)
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