Ratios and Proportions

A scale drawing of a billboard uses the scale 4 cm:9 ft. The length of the billboard in the drawing is 11 cm. How long is the actual billboard?

• 13 ft

• 20.75 ft

• 24.75 ft

• 22 ft

A unit rate is a ratio with:

• denominator of 1

• numerator of 1

Hamburger meat sells for $6 for every 3 pounds. If Alicia buys 10 pounds of hamburger meat, how much will she pay?

• $30

• $20

• $60

• $10

Courtney’s summer camp has 2 canoes for every 5 campers. If there are 70 campers in all, which proportion can be used to calculate how many canoes there are at the camp?

• 5/2 = 70/x

• 2/5 = 70/x

• 2/x = 70/5

• 2/70 = 5/x

In an animal shelter, the ratio of cats to dogs is 3 to 5. If there are a total of 25 dogs at the shelter, how many cats do they have?

• 15

• 18

• 21

• 32

Find the unknown value to make the ratios a proportion

5 : 6 = 15 : m

Find the unknown value to make the ratios a proportion

k : 5 = 7 : 1

Find the unknown value to make the ratios a proportion

6 : 16 = 3 : p

Find the unknown value to make the ratios a proportion

36 : 63 = s : 7

Find the unknown value to make the ratios a proportion

9 : y = 27 : 15