Ratios and Unit Ratio

What fraction, decimal and percent does the following model represent?

• 33 1/3% and .33 and 1/3

• 1/3 and .33 and 33%

• 3.3 and 33.3 and 1/3

• 33.3% and 1/3 and 3.3

A worker uses 450 inches of steel wire to make 300 springs the same size. At this rate how many inches of steel wire are needed to make 1 spring?

Which Statement best describes the table?

• A. The ratio of laps to days is 1:18.

• B. In 5 days, 80 laps will be completed.

• C. The ratio of days to laps is 1:18.

• D. In 8 days, 142 laps will be completed.

The model below shows the ratio of gray to white squares. Which of the following is NOT an equivalent ratio of gray squares to white squares?

• 8/10

• 24/30

• 36/48

• 20/25

There are 15 blueberry muffins and 9 banana muffins. What is the ratio of banana muffins to total muffins?

• 15:3

• 5:8

• 3:5

• 3:8

Five tacos cost $8. At this rate, how much would 12 cost?

• $19.20

• $8.00

• $1.60

• $12.00

Fill in the blanks of the ratio table:

• 10, 40

• 10, 45

• 20, 9

• 20, 45

A large community college has professors and lecturers. The total number of faculty members is 136. The school reported that they have 6 professors for every 11 lecturers. How many professors does the community college employ?

What is the ratio of boys to girls?

• 10 to 13

• 23 to 13

• 13 to 10

• 23 to 10

In the fruit bowl there are 4 apples, 2 bananas, and 5 pears.  What is the ratio of pears to ALL fruit?

• 5:4

• 5:11

• 2:5

• 6:5