You currently make $18.32 an hour, get time and a half for anything over 40 hours, and a 10% commission on all sales for the month. Determine your gross monthly salary given that your sales on average are $7,891 per month and you work 5 hours of overtime a week.

Your overtime rate is 1.5 × $18.32 = $27.48 per hour. Each week, you earn 40 × $18.32 + 5 × $27.48 = $870.20; using 4 weeks for the month, that is $3,480.80. Your commission is 10% × $7,891 = $789.10. Adding them gives $3,480.80 + $789.10 = $4,269.90, choice C.

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