Real-Life Ratio Problems: Finding Equivalent Ratios

A recipe calls for 2 cups of flour and 3 cups of sugar. If you want to make a smaller batch using 1 cup of flour, how much sugar will you need to keep the ratio the same?

• 3.5 cups of sugar

• 2 cups of sugar

• 1 cup of sugar

• 1.5 cups of sugar

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

• 30

• 15

• 20

• 25

A car travels 60 miles in 1 hour. If it continues at the same speed, how far will it travel in 3 hours?

• 240 miles

• 120 miles

• 150 miles

• 180 miles

A gardener uses 3 parts of fertilizer for every 2 parts of water. If he uses 6 parts of fertilizer, how many parts of water does he need?

• 6 parts of water

• 2 parts of water

• 8 parts of water

• 4 parts of water

In a fruit basket, the ratio of apples to oranges is 3:2. If there are 12 apples, how many oranges are there?

• 10

• 6

• 4

• 8

A painter mixes red and blue paint in a ratio of 5:2. If he uses 15 cups of red paint, how many cups of blue paint does he need?

• 4 cups of blue paint

• 6 cups of blue paint

• 8 cups of blue paint

• 10 cups of blue paint

A recipe requires 4 cups of milk for every 1 cup of sugar. If you have 8 cups of milk, how much sugar can you use while keeping the ratio the same?

• 3 cups of sugar

• 4 cups of sugar

• 2 cups of sugar

• 1 cup of sugar

In a school, the ratio of teachers to students is 1:15. If there are 30 teachers, how many students are there?

• 600

• 4500

• 300

• 450

A map has a scale of 1 inch to 5 miles. If two cities are 10 inches apart on the map, how far apart are they in real life?

• 25 miles

• 50 miles

• 15 miles

• 100 miles

A box contains 8 red balls and 4 blue balls. What is the ratio of red balls to blue balls, and how many blue balls would there be if there were 32 red balls?

• The ratio of red balls to blue balls is 1:2, and there would be 8 blue balls if there were 32 red balls.

• The ratio of red balls to blue balls is 2:1, and there would be 16 blue balls if there were 32 red balls.

• The ratio of red balls to blue balls is 3:1, and there would be 12 blue balls if there were 32 red balls.

• The ratio of red balls to blue balls is 4:1, and there would be 20 blue balls if there were 32 red balls.