Percent 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 x 0.20 = 10.

Front

What does 'discount' mean in terms of sales?

Back

A discount is a reduction in the original price of a product, often expressed as a percentage.

Front

If an item costs $100 and is on sale for 25% off, what is the sale price?

Back

The sale price is $75. (100 - (100 x 0.25) = 75)

Front

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

Back

Original Price = Sale Price / (1 - Discount Rate).

Front

If 30% of a number is 60, how do you find the number?

Back

Divide 60 by 0.30. The number is 200.

Front

What is the relationship between percentages and fractions?

Back

Percentages can be converted to fractions by placing the percentage over 100 and simplifying. For example, 25% = 25/100 = 1/4.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100. For example, 1/4 = 0.25 x 100 = 25%.

Front

What is the sale price of an item that costs $80 with a 15% discount?

Back

The sale price is $68. (80 - (80 x 0.15) = 68)

Front

If 50% of a number is 150, what is the number?

Back

The number is 300. (150 / 0.50 = 300)