Rates, Ratios, and Proportions

Front

What is a rate?

Back

A rate is a ratio that compares two different kinds of quantities, often expressed as a quantity per unit of time, such as miles per hour.

Front

What is a ratio?

Back

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

Front

What is a proportion?

Back

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

Front

How do you calculate the average rate of speed?

Back

Average rate of speed is calculated by dividing the total distance traveled by the total time taken.

Front

If Melissa drives 238 miles in 5 hours, what is her average speed?

Back

48 MPH

Front

How do you find the unit rate?

Back

To find the unit rate, divide the total amount by the number of units.

Front

If a job pays $56 for 8 hours of work, how much does it pay per hour?

Back

$7 per hour

Front

What does it mean for two ratios to be proportional?

Back

Two ratios are proportional if they can be expressed as equivalent fractions.

Front

Are the ratios 3/4 and 24/32 proportional?

Back

Yes

Front

How do you determine the cost per gallon of gas?

Back

To determine the cost per gallon, divide the total cost by the number of gallons.