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Serena and Sienna both work for a company that pays 12 dollars per hour for the first 40 hours of work in a week. If an employee works beyond 40 hours, it is considered overtime, and the overtime pay is 18 dollars per hour (50% more). Last week Serena earned a total of 642 dollars, and Sienna earned a total of 456 dollars. How many hours did Serena and Sienna work in total?

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Answer:

87 total hours.

Step-by-step explanation:

The equation 456/12 Gives you how many hours Sienna worked. (38)

642-480 will give you how much money Serena made off of Just OT (162)

162/18 = 9 (9 is how many overtime hours Serena worked.)

Serena worked her normal 40 hours, then worked over time, so you have to add 40 to the equation.

9+40+38 = 87

Serena and Sienna worked 87 total hours.

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