what is 15 of $45

Natashya

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26-12-2024

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What is 15% of $45? A Simple Percentage Calculation

Finding a percentage of a number is a common task in many situations, from calculating sales tax to determining discounts. This article will walk you through calculating 15% of $45, and explain the process so you can tackle similar problems yourself.

Understanding Percentages

A percentage is a fraction of 100. 15% means 15 out of 100, or 15/100. To find 15% of $45, we need to multiply $45 by the decimal equivalent of 15%.

Converting Percentages to Decimals

To convert a percentage to a decimal, divide the percentage by 100. In this case:

15% ÷ 100 = 0.15

Calculating 15% of $45

Now, we simply multiply $45 by 0.15:

$45 x 0.15 = $6.75

Therefore, 15% of $45 is $6.75.

Alternative Method: Using Fractions

You can also solve this using fractions. Remember that 15% is equal to 15/100. So, the calculation becomes:

(15/100) x $45 = $6.75

This method demonstrates the underlying mathematical principle. Both methods yield the same result.

Practical Applications

Understanding how to calculate percentages is useful in various real-life situations:

• Sales and Discounts: Calculating the discount on sale items.
• Taxes: Determining the amount of sales tax or other taxes.
• Tips: Calculating appropriate tips in restaurants or other service industries.
• Finance: Understanding interest rates and calculating loan payments.
• Statistics: Analyzing data and interpreting percentages in reports.

Conclusion

Calculating percentages is a fundamental mathematical skill. By understanding the conversion of percentages to decimals or fractions and applying simple multiplication, you can easily determine the value of any percentage of any number. In this case, we definitively showed that 15% of $45 is $6.75. Now you have the knowledge and confidence to tackle similar percentage problems in the future!