Mary works in a restaurant a maximum of 60 hours. For the first 20 hours, she is paid $8 per hour. For each overtime hour, she is paid at a rate which is 25% higher than her regular rate. How much Mary can earn in a week?
Select the correct option.
A) 300  B) 420  C) 560  D) 320  E) 400
Mary receives $8(20)=$160 for the first 20 hours.   For the 40 overtime hours, she receives $8(0.25) +$8 = $10 per hour, that is $10(40)=$400.   The total amount is $160+$400 = $560   Answer 560 560.160+ 400= 
<gadget id="calculator">160+ 400</gadget>
<output>560</output>
$560   Answer 560 560.
<result>C</result>
Mary works in a restaurant a maximum of 60 hours. For the first 20 hours, she is paid $8 per hour. For each overtime hour, she is paid at a rate which is 25% higher than her regular rate. How much Mary can earn in a week?