Solving Ratio Word Problems

In a classroom, the ratio of boys to girls is 4:5. If there are 20 boys in the classroom, how many girls are there?

• 15

• 25

• 20

• 30

A bag contains red and blue marbles in the ratio 3:4. If there are 12 red marbles, how many blue marbles are there?

• 12

• 16

• 18

• 20

Carol puts some green and red unit cubes in a box. The ratio of the number of green cubes to the number of red cubes is 2:1. She adds 12 more red cubes in the box and the ratio becomes 4:5.

a) How many green cubes are there in the box?

b) How many red cubes does Carol have in the end?

There are 3 buses to carry 96 students on a field trip. Write the ratio of buses to students. (Write answer using a colon.)

In a recipe, the ratio of fluid ounces of water to fluid ounces of tomato paste is 4:7. You plan to make 44 ounces of sauce. How many fluid ounces of water do you need.

n a recipe, the ratio of fluid ounces of water to fluid ounces of tomato paste is 4:7. You plan to make 44 ounces of sauce. How many fluid ounces of tomato paste do you need.

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

• 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