Simple Ration Problems

There are 10 desks and 8 chairs. What is the ratio of chairs to desks?

• 10 to 8

• 8 to 10

• 4 to 5

• 5 to 4

There are 4 boys and 2 girls. What is the ratio of girls to boys?

• 4:2

• 2:4

• 4:6

• 6:4

There are 5 marbles and 3 rocks. What is the ratio of marbles to rocks?

• 3 to 5

• 5 to 8

• 8 to 5

• 5 to 3

There are 20 cars and 10 trucks in the school parking lot. What is the ratio of cars to trucks?

• 30:10

• 10 to 1

• 10 to 20

• 20 to 10

Two quantities are in the ratio 7:3. If the sum of the quantities is 100, what is the larger quantity?

• 70

• 75

• 30

• 25

A school's student to teacher ratio is 20:1. If there are 400 students, how many teachers are there?

• 20

• 25

• 15

• 10

A 12-ounce bottle of shampoo lasts Enrique 16 weeks. How long would you expect an 18-ounce bottle of the same brand to last him? (no label)

In Houston, Texas 6 birds ate 30 grams of worms in one night. At this rate, how many grams of worms could 98 birds eat in one night?

• 490

• 19.6

• 134

• 580

If the ratio of cats to dogs in a pet store is 3:4, and there are 12 cats, how many dogs are there?

• 16

• 15

• 14

• 13

A recipe calls for 2 cups of flour for every 3 cups of sugar. If you want to make a half batch, how many cups of flour do you need?

• 1

• 1.5

• 2

• 3