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.How many hours did Kersha work in each job?

Answer 1

12c + 8.25(585 c) = 55

Answer 2

Let she works as cashier for x hours.
she works as office clerk for 55-x hours.
Then (55-x) *12+8.25 x=585
solve and find x.