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 terms and then solve for the variable.

Front

If 5 cones are sold for every 3 brownies, what is the ratio of cones to brownies?

Back

The ratio of cones to brownies is 5:3.

Front

If there are 24 brownies sold, how many cones are sold if the ratio is 5:3?

Back

40 ice cream cones are sold.

Front

What is the unit rate?

Back

The unit rate is a comparison of two different quantities when they are combined together.

Front

If a pizza has 8 slices and costs $12, what is the cost per slice?

Back

The cost per slice is $1.50.

Front

How do you find the cost of multiple items if you know the cost of one?

Back

Multiply the cost of one item by the number of items.

Front

If 50 apples cost $25, what is the cost of one apple?

Back

The cost of one apple is $0.50.

Front

How much would 75 apples cost if 50 apples cost $25?

Back

75 apples would cost $37.50.

Front

What is the formula to find speed?

Back

Speed = Distance / Time.