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? office clerk: 31 hours; cashier: 24 hours office clerk: 20 hours; cashier: 35 hours office clerk: 35 hours; cashier: 20 hours office clerk: 28 hours; cashier: 27 hours