Real-Life Ratios: Cross-Multiplication Challenges

A recipe calls for 2 cups of flour for every 3 cups of sugar. If you want to use 6 cups of sugar, how many cups of flour do you need?

• 5 cups of flour

• 4 cups of flour

• 2 cups of flour

• 3 cups of flour

A car travels 150 miles on 5 gallons of gas. How many miles can it travel on 8 gallons of gas?

• 180 miles

• 300 miles

• 240 miles

• 200 miles

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

• 20

• 15

• 30

• 25

A map shows that 1 inch represents 10 miles. If two cities are 3 inches apart on the map, how far apart are they in real life?

• 15 miles

• 25 miles

• 20 miles

• 30 miles

A recipe requires 3 eggs for every 4 servings. How many eggs are needed for 10 servings?

• 8 eggs

• 6 eggs

• 10 eggs

• 4 eggs

If 5 notebooks cost $10, how much would 8 notebooks cost?

• $12

• $16

• $20

• $8

A gardener plants 12 flowers in 3 rows. If he wants to plant them in 5 rows, how many flowers will he plant in each row?

• 2

• 2.4

• 4

• 3

A car can travel 240 miles on 8 gallons of gas. How many gallons of gas will it need to travel 360 miles?

• 10 gallons

• 15 gallons

• 8 gallons

• 12 gallons

If a store sells 3 shirts for $24, how much would 10 shirts cost?

• $100

• $40

• $60

• $80

A recipe uses 4 cups of water for every 2 cups of rice. If you want to cook 6 cups of rice, how much water do you need?

• 8 cups of water

• 10 cups of water

• 14 cups of water

• 12 cups of water