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July 30, 2014

July 30, 2014

Posted by **deniece** on Friday, December 9, 2011 at 10:55am.

- maths -
**Reiny**, Friday, December 9, 2011 at 11:22amamount of $2.75 coffe --- x

amount of $5.00 coffee --- 100-x

solve for x ......

2.75x + 5(100-x) = 3.9(100)

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