BSEP Ratios and Proportions 2 — Questions and Answers
Question 1: A recipe calls for 2 cups of flour for every 3 cups of oats. If you use 8 cups of flour, how many cups of oats do you need?
- 10 cups
- 12 cups (Correct answer)
- 9 cups
- 6 cups
Correct answer: 12 cups
Set up the proportion 2/3 = 8/x, then cross-multiply to get x = 12.
Question 2: A map uses a scale of 1 inch = 50 miles. If two cities are 3.5 inches apart on the map, what is the actual distance?
- 150 miles
- 175 miles (Correct answer)
- 200 miles
- 125 miles
Correct answer: 175 miles
Multiply 3.5 inches by 50 miles per inch to get 175 miles.
Question 3: The ratio of boys to girls in a class is 4:5. If there are 20 boys, how many girls are there?
- 16 girls
- 25 girls (Correct answer)
- 24 girls
- 15 girls
Correct answer: 25 girls
Set up 4/5 = 20/x and solve: x = (20 × 5) / 4 = 25.
Question 4: If 5 pounds of apples cost $7.50, how much do 8 pounds cost?
- $10.00
- $11.50
- $12.00 (Correct answer)
- $13.00
Correct answer: $12.00
The unit price is $1.50/lb, so 8 × $1.50 = $12.00.
Question 5: Which ratio is NOT equivalent to 6:9?
- 2:3
- 4:6
- 8:12
- 3:5 (Correct answer)
Correct answer: 3:5
6:9 simplifies to 2:3; 3:5 does not equal 2:3.
Question 6: A car travels 180 miles in 3 hours. At the same speed, how long will it take to travel 270 miles?
- 4 hours
- 4.5 hours (Correct answer)
- 5 hours
- 3.5 hours
Correct answer: 4.5 hours
Speed = 60 mph; 270 ÷ 60 = 4.5 hours.
Question 7: A store mixes coffee beans in a ratio of 3 parts dark roast to 2 parts light roast. How many pounds of dark roast are needed to make a 25-pound blend?
- 10 pounds
- 12 pounds
- 15 pounds (Correct answer)
- 18 pounds
Correct answer: 15 pounds
Dark roast is 3/5 of the total: (3/5) × 25 = 15 pounds.
BSEP Ratios and Proportions 2
A recipe calls for 2 cups of flour for every 3 cups of oats.
If you use 8 cups of flour, how many cups of oats do you need?