Proportions and Ratios

If there are 2 cats and 5 dogs what is the ratio of cats to dogs?

• 2:5

• 5:2

• 10:1

What is the ratio of strawberries to the total if there are 20 strawberries and 35 grapes?

• 20:35

• 35:20

• 20:55

What is a ratio?

• A comparison of one number

• A comparison of two units

• The difference between two items

Unit rates are....

• ratios whereby the amount given is per 1 unit

• ratios whereby the amount given is per 2 units

• ratios whereby the amount given is per 10 units

Find the unit rate for 10 apples that cost $2.00

• $20.00 per apple

• $0.20 per apple

• $0.50 per apple

Two ratios that are equal are called

• problems

• fractions

• proportions

When solving a proportion the first step is

• divide

• write a word label

• solve for the variable

What would the proportion look like for the following example? 12 girls have brown eyes and 10 girls have blue eyes.If 72 girls have brown eyes, how many have blue eyes?

• 5

• 15

• 4

At Tim Horton's the number of cups of coffee sold to hot chocolate is 100 to 5. If there are 2,000 cups of coffee sold, how many cups of hot chocolate are sold?

• 10

• 100

• 40,000