Solving Proportions

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the two ratios and set the products equal to each other.

Front

If 8 slices of pizza cost $12, what is the cost of one slice?

Back

$1.50

Front

If there are 5 ice cream cones for every 3 brownies, how many cones are there for 24 brownies?

Back

40 ice cream cones.

Front

What is the formula to find the unit rate?

Back

Unit rate = Total amount / Number of units.

Front

If a car travels 120 miles in 3 hours, what is its speed in miles per hour?

Back

40 miles per hour.

Front

How do you find the total cost of items when given a unit price?

Back

Total cost = Unit price x Number of items.

Front

If 50 apples cost $25, how much do 75 apples cost?

Back

$37.50.

Front

What is the relationship between distance, speed, and time?

Back

Distance = Speed x Time.

Front

If 4 big water bottles hold 8 gallons, how much do 3 hold?

Back

6 gallons.