If a 15% tip is added to a meal costing $78.50, what is the total cost of the meal including tip?

$90.28.

Explanation: To multiply the percentage by the cost of the meal you need to convert it to a number so since you still wan the cost of the meal I there you do 1 and then add the number of the percentage as a decimal which makes it 1.15. Since 78.50 x 1.15 is 90.275 you round up to get 90.28

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