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Mathematics>Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
](http://upload.kekenet.com/2020/0116/24561579138581.png "SAT官方每日一题附答案和解析[数学](2020年1月16日)")
Caleb plans to install a patio of uniform width around a rectangular pool that measures 15 feet(ft) by 30(ft). If Caleb would like the total area of the pool and the patio to be approximately 800 ft^2 what should the approximate width of the patio be?
A.3.4ft
B.5ft
C.6.7ft
D.18.4ft
