SOLUTION: jess and her husband made a rectangular swimming pool measuring 28 feet by 42 feet. They want to add a decorative tile border of uniform width around sides of the pool. How wide ca
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Question 1008420: jess and her husband made a rectangular swimming pool measuring 28 feet by 42 feet. They want to add a decorative tile border of uniform width around sides of the pool. How wide can they make the tile border if they purchased enough tile to cover 624 square feet? Answer by josgarithmetic(39616) (Show Source):
The x and y are pool dimensions, and A is the upper surface tile area surrounding the pool.
How wide is the uniform width border around the pool? Call this .
Area of just the pool upper surface:
Area of tile border and the pool:
Area of just the tile border:
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The unknown variable, which is the question asked, is u.
Solve for u.
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