Ratios and Proportions Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, often expressed as 'a to b' or a:b.

Front

What is a proportion?

Back

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

Front

How do you determine if two ratios are proportional?

Back

Two ratios are proportional if their cross products are equal.

Front

What is the unit rate?

Back

The unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit of another quantity.

Front

How do you calculate the unit rate from a given rate?

Back

To find the unit rate, divide the first quantity by the second quantity.

Front

What does 150% of x equal to 90% of y imply?

Back

It implies that 1.5x = 0.9y, which can be rearranged to find the relationship between x and y.

Front

If a clothing item is discounted by 25%, what is the sale price?

Back

The sale price is 75% of the original price, calculated as p - 0.25p = 0.75p.

Front

What is the equivalent of a 25% discount on an item?

Back

A 25% discount means you pay 75% of the original price.

Front

How do you convert a speed given in feet per minute to miles per hour?

Back

To convert feet per minute to miles per hour, multiply by 60 and divide by 5280.

Front

What is the fastest speed among given options?

Back

To find the fastest speed, convert all speeds to the same unit and compare.