Sheila Williams, a medical secretary, earns $3,575 monthly for a 35-hour week. For overtime work, she receives extra pay at the regular hourly rate up to 40 hours and time and one-half beyond 40 hours in any week. During one semimonthly pay period, Williams worked 10 hours overtime. Only 2 hours of this overtime were beyond 40 hours in any one week.

My question is How many overtime hour did Sheila earned? Is it 2 hours or 10 hours?