A waitress earns an average tip of 12% of the cost of the food she serves. If she serves $375 worth of food in one evening, how much money in tips will she earn on average?
$45
$37
$42
$420
Detailed Explanation
Multiply the total amount spent on drinks, 375, by 12% to determine the amount of tips.
375 × 0.12 = 45.
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