Comparing Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you express a ratio as a fraction?

Back

To express a ratio as a fraction, write the first quantity as the numerator and the second quantity as the denominator.

Front

What is the simplest form of a fraction?

Back

The simplest form of a fraction is when the numerator and denominator have no common factors other than 1.

Front

If Ernie travels 195 miles in 3 hours, what is his speed in miles per hour?

Back

Ernie's speed is 65 miles per hour (195 miles ÷ 3 hours).

Front

How do you calculate the total amount saved with a sponsorship?

Back

To calculate the total amount saved with a sponsorship, multiply the amount saved by the individual by the sponsorship rate and add it to the amount saved.

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 find the cost of one item from a total cost?

Back

To find the cost of one item, divide the total cost by the number of items.

Front

What is the formula to find distance when speed and time are known?

Back

Distance = Speed × Time.

Front

How do you compare two rates?

Back

To compare two rates, convert them to a common unit or find their unit rates.

Front

What is the cost of one adult movie ticket if 20 tickets cost $250?

Back

The cost of one adult movie ticket is $12.50 ($250 ÷ 20 tickets).