D 771 / D771 Final Exam (Latest Update 2025 / 2026) Quantitative Literacy | Questions & Answers | 100% Correct | Grade A - WGU

D 771 / D771 Final Exam (Latest Update
) Quantitative Literacy |
Questions & Answers | 100% Correct |
Grade A - WGU

Question: How many milliliters are in 4.5 liters?
Answer: 4500 mL
Rationale: 1 liter = 1000 milliliters; 4.5 × 1000 = 4500 mL.



Question: What is the perimeter of a rectangle with length 12 cm and width 8 cm?
Answer: 40 cm
Rationale: Perimeter = 2(length + width) = 2(12 + 8) = 2 × 20 = 40 cm.



Question: If a book costs $25 and is discounted by 10%, what is the sale price?
Answer: $22.50
Rationale: Discount = 25 × 0.10 = $2.50; Sale price = 25 − 2.50 = $22.50.



Question: Solve for x: 4x + 3 = 15.
Answer: x = 3
Rationale: 4x + 3 = 15 → 4x = 12 → x = 3.



Question: What is the area of a circle with radius 3 cm? (Use π ≈ 3.14)
Answer: 28.26 cm²
Rationale: Area = πr² = 3.14 × 3² = 3.14 × 9 = 28.26 cm².



Question: If you earn $20/hour and work 15 hours, what is your total pay?
Answer: $300
Rationale: Total pay = 20 × 15 = $300.

, Question: What is 3/5 as a decimal?
Answer: 0.6
Rationale: 3 ÷ 5 = 0.6.



Question: What is the mean of the numbers 1, 3, 5, 7, 9?
Answer: 5
Rationale: Mean = (1 + 3 + 5 + 7 + 9) ÷ 5 = 25 ÷ 5 = 5.



Question: If a car travels 300 miles in 5 hours, what is its average speed?
Answer: 60 mph
Rationale: Speed = distance ÷ time = 300 ÷ 5 = 60 mph.



Question: What is the simple interest on $1500 at 6% annual rate for 2 years?
Answer: $180
Rationale: Simple interest = 1500 × 0.06 × 2 = $180.



Question: What is the volume of a cube with side length 5 cm?
Answer: 125 cm³
Rationale: Volume = side³ = 5³ = 125 cm³.



Question: If 5x − 2 = 13, what is x?
Answer: x = 3
Rationale: 5x − 2 = 13 → 5x = 15 → x = 3.



Question: What is 30% of 200?
Answer: 60
Rationale: 30% of 200 = 0.3 × 200 = 60.



Question: What is the circumference of a circle with diameter 12 cm? (Use π ≈ 3.14)
Answer: 37.68 cm
Rationale: Circumference = π × diameter = 3.14 × 12 = 37.68 cm.

, Question: If a store offers a 20% discount on a $60 item, what is the discount amount?
Answer: $12
Rationale: Discount = 60 × 0.20 = $12.



Question: Solve for y: 3y + 6 = 18.
Answer: y = 4
Rationale: 3y + 6 = 18 → 3y = 12 → y = 4.



Question: What is the median of the numbers 2, 4, 6, 8, 10?
Answer: 6
Rationale: Ordered: 2, 4, 6, 8, 10; median is the middle value (6).



Question: Convert 3 hours to minutes.
Answer: 180 minutes
Rationale: 1 hour = 60 minutes; 3 × 60 = 180 minutes.



Question: If a triangle has base 7 cm and height 10 cm, what is its area?
Answer: 35 cm²
Rationale: Area = (1/2) × base × height = (1/2) × 7 × 10 = 35 cm².



Question: What is the compound interest on $2000 at 4% annually for 2 years? (Use A = P(1 +
r)^n)
Answer: $166.40
Rationale: A = 2000(1 + 0.04)² = 2000 × 1.0816 = 2163.20; Interest = 2163.20 − 2000 =
$166.40.



Question: If 7x = 21, what is x?
Answer: 3
Rationale: 7x = 21 → x = 21 ÷ 7 = 3.