Proportions Word Problems Review

Front

What is a proportion?

Back

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

Front

How do you set up a proportion for similar figures?

Back

To set up a proportion for similar figures, you compare the lengths of corresponding sides.

Front

If a painting's width is 3 inches and height is 4 inches, what is the proportion when the width is enlarged to 15 inches?

Back

Front

How do you solve for an unknown in a proportion?

Back

Cross-multiply the terms and then solve for the unknown.

Front

If 12 ounces of shampoo lasts 16 weeks, how long will 18 ounces last?

Back

24 weeks.

Front

What is the method to find the expected number of items based on a ratio?

Back

Multiply the total number of items by the ratio to find the expected count.

Front

If 13 out of 20 homes have a computer, how many computers are expected in 60 homes?

Back

39 computers.

Front

How do you calculate the rate of work done?

Back

Rate = Work done / Time taken.

Front

If a cashier rings up 2 customers in 8 minutes, how many can he ring up in 30 minutes?

Back

7.5 customers.

Front

What is the unit rate?

Back

The unit rate is a comparison of any two units, expressed as a quantity of one unit.