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April 19, 2015

April 19, 2015

Posted by **Megan** on Thursday, January 6, 2011 at 4:59pm.

- Pre-Algebra -
**helper**, Thursday, January 6, 2011 at 8:26pmx = orig cost without tax

0.055x = orig cost with tax

x + 0.055x = $179.35

1.055x = 179.35

x = 170.00 orig cost

170.00 - 170.00(0.10) = new cost with coupon without tax

170.00 - 17.00 = 153.00 new cost no tax

153.00 (0.055)tax = 8.42 tax

153.00 + 8.42 = 161.42 new total cost

179.35 - 161.42 = 17.93 savings

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