Solving Using Ratios

 A recipe called for the ratio of sugar to flour to be 7 : 3. If you used 63 ounce of sugar, how many ounces of flour would you need to use? Solve  by using equivalent fractions.

• 9
• 18
• 21
• 27

Edward had beaten 24 levels in a video game. If the ratio of levels he had beaten to not beaten was 3 : 1, how many levels does the game have total? Use a tape diagram to solve.

• 8
• 32
• 25
• 4

At the carnival, the ratio of people who won the ring toss game to lost it was 8 : 5. If 24 people won, how many people would have lost?

• 3
• 13
• 15
• 24

A parking lot has 117 spaces total. If 36 of the spaces have cars in them, what is the ratio of empty spaces to filled spaces?

• 117:36
• 36:117
• 36:81
• 81:36

If 30 kids in the class like grape juice, how many kids like pineapple juice?  Use the tape diagrams to answer.

• 4
• 30
• 70
• 40

If there are 120 boys in the group, how many boys and girls are there TOTAL? Use the tape diagrams to solve.

• 150

• 270

• 250

• 360

In a bag of Jolly Ranchers, the ratio of blue to red is 3 to 4.  If I have a TOTAL of 56 Jolly Ranchers, how many of them are blue?  Solve with a tape diagram.

• 12
• 28
• 32
• 24

The ratio of boys to girls in history class is 4 to 5. How many girls are in the class if there are 12 boys in the class?

• 10

• 15

• 51

• 20

A factory produces 6 motorcycles in 9 hours. Find how many hours it takes to produce 16 motorcycles at this rate.

• 24

• 54

• 33

• 12

A recipe that will make 3 pies calls for 7 cups of flour. Find how many pies can be made with 28 cups of flour.

• 12

• 4

• 21

• 16