Proportions Word Problems

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 1 bag of carrots costs $3, how many bags can you buy for $18?

Back

6 bags.

Front

If Will spent $3.75 for 3 pounds of granola, how many pounds can he buy for $10?

Back

8 pounds.

Front

What is the formula to find the length of a rectangle if you know the width and the scale factor?

Back

Length = Width × Scale Factor.

Front

If a rectangular garden is 45 ft wide and 70 ft long, what is the ratio of width to length?

Back

The ratio is 45:70 or 9:14.

Front

How many quizzes will Harold have to attend to reach a total of 20 quizzes if he took 8 quizzes in 2 weeks?

Back

5 weeks.

Front

If Jasmine bought 32 kiwi fruit for $16, how many kiwi can Lisa buy with $4?

Back

8 kiwi.

Front

What is the scale factor if the width of a garden is 9 inches in a drawing and the actual width is 45 feet?

Back

Scale factor = 9 in / 45 ft = 1 in / 5 ft.

Front

What is a unit rate?

Back

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