Chapter 3

A bag contains pennies and nickels. You are given the number of pennies in the bag and the ratio of pennies to nickels. Find the number of nickels in the bag.

18 pennies; 6 to 1

• 3

• 6

• 1

• 9

A bag contains pennies and nickels. You are given the number of pennies in the bag and the ratio of pennies to nickels. Find the number of nickels in the bag.

8 pennies: 2 : 7

• 7

• 4

• 28

• 24

You have $40 for a video game and your parents will contribute some money. The tape diagram represents the amounts of money.
How much money will your parents contribute?

• $5

• $10

• $8

• $32

There are 12 more girls than boys in a drama club. The ratio of girls to boys is 9 : 5. How many girls and how many boys are in the drama club?

• 21 girls and 10 boys

• 27 girls and 15 boys

• 24 girls and 12 boys

• 32 girls and 14 boys

In a pet shop, there are 12 dogs, 9 cats, and 17 fish. Write the ratio.

cats to dogs

• 9 to 12

• 9 to 29

• 12 to 9

• 29 to 9

In a pet shop, there are 12 dogs, 9 cats, and 17 fish. Write the ratio.

fish : dogs

• 17 : 9

• 9 : 17

• 17 : 12

• 12 : 17

Determine whether the ratios are equivalent.

4 : 7 and 8 : 16

12 : 48 and 2 : 8

• yes

  no

• no

  no

• no

  yes

• yes

  yes

A car moving at a constant speed travels 16 miles every 20 minutes.
A truck moving at a constant speed travels 4 miles every 5 minutes. 
Are the vehicles traveling at the same speed? If not, which is faster?

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To make trail mix, Factory A combines 2 pounds of nuts for every
3 pounds of dried fruit. Factory B combines 5 pounds of nuts for every 8 pounds of dried fruit. Which factory has a fruitier trail mix? Explain.

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A soccer team has 12 girls and 18 boys. The team is split into groups that have the same ratio of girls to boys as that of the whole team.
How many girls are in a group that has 9 boys?

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