You started a new job as a valet at the local hospital. You earn $7.50 per hour plus tips. Last week, you worked 32 hours and earned $855. How much did you earn in tips?

Your hourly pay for 32 hours was 32 × $7.50 = $240. Subtract that base pay from your total earnings: $855 − $240 = $615. You earned $615 in tips, which is choice C.

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