Lunch cost is $30, tip 15%. What is the tip amount?

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Multiple Choice

Lunch cost is $30, tip 15%. What is the tip amount?

Explanation:
The main idea is calculating a percentage of a given amount. To find a 15% tip on a $30 lunch, convert the percentage to a decimal (15% = 0.15) and multiply: 0.15 × 30 = 4.5, which is $4.50. You can also add 10% ($3.00) and 5% ($1.50) to get the same total, $4.50. So the tip amount is four dollars and fifty cents.

The main idea is calculating a percentage of a given amount. To find a 15% tip on a $30 lunch, convert the percentage to a decimal (15% = 0.15) and multiply: 0.15 × 30 = 4.5, which is $4.50. You can also add 10% ($3.00) and 5% ($1.50) to get the same total, $4.50. So the tip amount is four dollars and fifty cents.

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