SOLUTION: A rectangular swimming pool is twice as long as it is wide. A small decorative walkway surrounds the pool. If the walkway is a constant 2 feet wide and has an area of 196 square fe

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Question 956252: A rectangular swimming pool is twice as long as it is wide. A small decorative walkway surrounds the pool. If the walkway is a constant 2 feet wide and has an area of 196 square feet, what are the dimensions of the pool?
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
Let w and L be the width and the length of the pool.
Let u be the border width. Given u=2.
Let A be the border area given A=196.
Also given is L=2w.


Pool area is wL.
Border area is because the value was given.

Simplify the border area equation.



Use the given described L=2w to substitute,





--------Width in a symbolic form result.

Find the value for w.



---------The value for the width.

Find value for L.
From given L=2w,
-----------the value for the length.
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