Ratios and Rates Review

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a:b'.

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

A rate is a specific kind of ratio that compares two quantities with different units, such as speed (miles per hour).

The ratio of flour to sugar is 2:3.

To find the unit rate, divide the quantity by the number of units. For example, if 60 miles are driven in 2 hours, the unit rate is 30 miles per hour.

The simplest form of the ratio 9:12 is 3:4.

If there are 20 apples, there are 16 oranges (4:5 ratio).

The cost per item is $5 (60 ÷ 12).

The average speed is 50 miles per hour (150 miles ÷ 3 hours).

The simplest form of the ratio 15:25 is 3:5.