John is paid \(x\) dollars per hour for the first \(8\) hours that he works in a given day, \(1.5x\) dollars per hour

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John is paid \(x\) dollars per hour for the first \(8\) hours that he works in a given day, \(1.5x\) dollars per hour for the next \(4\) hours that he works on that same day, and \(2x\) dollars per hour for any time over \(12\) hours that he works on that same day, where \(x\) is an integer. How many hours did John work on Monday?

1) John was paid a total of \(\$280\) for his work on Monday.

2) If John had worked \(2\) additional hours, then he would have made an additional \(80\) dollars.

Answer: C

Source: EMPOWERgmat
Source: — Data Sufficiency |