0.6 Percent Proportion

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

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 40% of 230, calculate 230 * 0.40 = 92.

Front

What is 40% of 200?

Back

80

Front

If 40% of a group is boys, what percentage is girls?

Back

60% of the group is girls.

Front

How do you find the percentage of seats sold in a theater?

Back

Divide the number of seats sold by the total number of seats and multiply by 100. For example, (225/250) * 100 = 90%.

Front

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

Back

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

Front

If Kate saved $14.40 with a 30% discount, what was the original price of the sweater?

Back

$48.00

Front

What is the relationship between fractions and percentages?

Back

A percentage is a fraction out of 100. For example, 25% is equivalent to 25/100 or 1/4.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100. For example, 25% becomes 0.25.

Front

What is the percentage of empty seats if 225 out of 250 seats are sold?

Back

10% of the seats are empty.