Proportions - Real world 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 3 bags of Takis cost $5, what is the cost of 1 bag?

Back

The cost of 1 bag is $5 ÷ 3 = $1.67.

Front

If Angelo has $20, how many bags of Takis can he buy if each bag costs $1.67?

Back

Angelo can buy 20 ÷ 1.67 ≈ 12 bags.

Front

What is the unit rate?

Back

The unit rate is a comparison of any two units in which the second unit is 1.

Front

If Nik plays 6 hours of video games every 2 days, how many hours does he play per day?

Back

Nik plays 6 ÷ 2 = 3 hours per day.

Front

How many hours does Nik play in 10 days?

Back

Nik plays 3 hours/day × 10 days = 30 hours.

Front

Convert 5 feet to inches.

Back

5 feet × 12 inches/foot = 60 inches.

Front

If Aryon reads 4 books every 3 weeks, how many books does he read in 1 week?

Back

Aryon reads 4 ÷ 3 ≈ 1.33 books per week.

Front

How long will it take Aryon to read 20 books if he reads 1.33 books per week?

Back

It will take Aryon 20 ÷ 1.33 ≈ 15 weeks.