Problem Solving Proportional Relationships

Solving ratio problem: If a car travels 240 miles in 4 hours, what is the ratio of miles to hours?

• 120 miles/hour

• 40 miles/hour

• 80 miles/hour

• 60 miles/hour

Identifying proportional relationships: Which of the following pairs of numbers are in proportion: 3 and 9, 4 and 12, 5 and 15, 6 and 18?

• 4 and 12

• 6 and 18

• 3 and 9

• 5 and 15

Using proportions to solve problems: If it takes 3 hours for 5 workers to complete a project, how long will it take 8 workers to complete the same project?

• 5 hours

• 1.875 hours

• 2.5 hours

• 10 hours

Applying ratios and proportions in real-life scenarios: A recipe calls for 2 cups of flour and 1 cup of sugar. If you want to double the recipe, how much sugar do you need?

• 1 cup

• 3 cups

• 4 cups

• 2 cups

Applying ratios and proportions in real-life scenarios: A map scale is 1 inch represents 10 miles. If two cities are 3.5 inches apart on the map, how far are they from each other in real life?

• 20 miles

• 35 miles

• 100 miles

• 3.5 miles

Calculating percentages: If a shirt originally costs $40 and is now on sale for 25% off, what is the sale price?

• $20

• $35

• $30

• $25

• y = 1/5x

• y = 5x

• y = 1/2x

Write the equation of the proportional relationship using the format y = kx.

What is the constant of proportionality? Use the format k = 2.

Write the equation of the graph. Use the format y = kx.