Question

Kersha has two jobs. During the day she works as an office clerk, and in the evening she works as a cashier. Her office job pays her $12.00 per hour. Her cashier job pays her $8.25 per hour. In one week, Kersha worked 55 hours. She earned a total of $585.

Let c represent the number of hours Kersha works as an office clerk. Which equation can be used to find how many hours Kersha worked in both jobs?



A.

12c + 8.25(55 – c) = 585


B.

12c + 8.25(c – 55) = 585


C.

8.25c + 12(55 – c) = 585


D.

12c + 8.25(585 – c) = 55

Answer 1

12c + 8.25 (55-c) = 585

The answer is A

Answer 2

As office clerk Kersha earns hours c times rate $ 12.00 per hour
= 12c

As cashier Kersha works for total hours subtract office hours ( 55-c) so she will earn 55-c hours times rate $8:25
= (55-c) 8.25

Total earnings : 12c + 8.25 (55-c) = 585 so (A)