This math topic focuses on calculating percent growth of money, specifically using 10% increments. The problems involve determining the final monetary amount after applying a 20% increase, either as interest, a tip, or a general percentage increase to initial amounts ranging from $5 to $95. Each problem lists multiple-choice answers, requiring an understanding of applying percentage calculations in various financial contexts to solve them.
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Calculate the final amount when it changes by a percentage
$55 grows by 20%