A meal costs \(\$36\) before tip. What is the total cost after adding a \(20\%\) tip?
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What this problem is really about
The twenty-percent tip is based on the thirty-six-dollar meal, but the requested total includes both amounts. We’ll convert the rate, calculate the tip from the before-tip price, and add it to the meal cost. Multiplying the meal by the combined total factor checks that the tip was added exactly once.
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