Solving Percent Word Problems

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 20% of 50, calculate 50 * 0.20 = 10.

Front

What does it mean to find a percentage of a total?

Back

Finding a percentage of a total means determining how much a certain percentage represents out of the whole amount.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 75% becomes 0.75.

Front

What is the formula to find the original price after a discount?

Back

The formula is: Original Price = Sale Price / (1 - Discount Rate).

Front

If a jacket is on sale for $45, which is 75% of its original price, how do you find the original price?

Back

Use the formula: Original Price = Sale Price / (1 - Discount Rate). Here, Original Price = 45 / 0.75 = $60.

Front

How do you find the amount taken out for taxes?

Back

To find the amount taken out for taxes, multiply the total income by the tax rate. For example, if income is $12,800 and tax rate is 15%, then Taxes = 12,800 * 0.15 = $1,920.

Front

What is the relationship between part, whole, and percent?

Back

The relationship is defined by the formula: Percent = (Part / Whole) * 100.

Front

How do you find the part when given the whole and the percent?

Back

To find the part, use the formula: Part = (Percent / 100) * Whole.

Front

If a student answers 80% of 20 problems correctly, how do you find the number of correct answers?

Back

Calculate: Correct Answers = (80 / 100) * 20 = 16 problems.