Ratio Story Problem

Solve the following real-world problem using ratio and rate reasoning: If 5 workers can build a house in 8 days, how many workers are needed to build the same house in 4 days?

• 15 workers

• 3 workers

• 10 workers

• 20 workers

Solve the following ratio problem using a table: A recipe calls for 2 cups of flour and 3 cups of sugar. If you want to make half the recipe, how much flour and sugar do you need?

• 1 cup of flour and 1.5 cups of sugar

• 1.5 cups of flour and 2 cups of sugar

• 3 cups of flour and 2 cups of sugar

• 2 cups of flour and 3 cups of sugar

Explain how you can use ratio reasoning to solve a problem involving the ratio of boys to girls in a classroom if there are 18 boys and 24 girls.

• 1:2

• 10:12

• 5:6

• 3:4

If a recipe calls for 2 cups of flour and 3 cups of sugar, and you only have 1 cup of flour, how much sugar do you need to maintain the same ratio?

• 2 cups

• 1.5 cups

• 3 cups

• 4 cups

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 a survey, the ratio of people who prefer tea to those who prefer coffee is 4:5. If 180 people were surveyed, how many prefer tea?

• 80

• 72

• 90

• 100

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

Use ratio language to describe the relationship where for every 5 red marbles, there are 7 blue marbles.

• There are 5 red marbles for every 7 blue marbles.

• The ratio of red marbles to blue marbles is 5 to 7.

• Both A and B

• None of the above

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 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