Homework Help: math

Posted by Packy on Sunday, December 27, 2009 at 6:07pm.

David put 155 feet of plastic edging around the outside edge of the concrete surrounding his pool. The concrete in 17.5 feet wide, how long is the concrete.

help me solve please, very confused.

math - Ms. Sue, Sunday, December 27, 2009 at 6:13pm
Let x = length. Solve for x.

(2*17.5) + 2x = 155
35 + 2x = 155
2x = 155 - 35
2x = 120
x = ?
math - Packy, Sunday, December 27, 2009 at 6:30pm
60...thanks!
math - Ms. Sue, Sunday, December 27, 2009 at 6:48pm
You're welcome.

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