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December 18, 2014

December 18, 2014

Posted by **mary** on Friday, January 14, 2011 at 3:46pm.

- algebra -
**Reiny**, Friday, January 14, 2011 at 4:09pmlet her regular rate be $x per hour

let her overtime rate be $y per hour

first week: 40x + 7y = 390

2nd week: 42x + 8y = 416

1st equat x 8 ---> 320x +56y = 3120

2nd equt x 7 ---> 294x + 56y = 2912

subtract

26y = 208

y = 8

so her overtime rate is $8 per hour

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