West B Test Mathematics 4 — Questions and Answers
Question 1: A car travels 240 miles in 4 hours. What is its average speed in miles per hour?
- 60 mph (Correct answer)
- 80 mph
- 960 mph
- 50 mph
Correct answer: 60 mph
Average speed = distance ÷ time = 240 ÷ 4 = 60 mph.
Question 2: What is the greatest common factor (GCF) of 24 and 36?
- 6
- 4
- 12 (Correct answer)
- 72
Correct answer: 12
Factors of 24: 1,2,3,4,6,8,12,24; factors of 36: 1,2,3,4,6,9,12,18,36; GCF = 12.
Question 3: A class of 30 students has a ratio of boys to girls of 2:3. How many girls are in the class?
- 12
- 15
- 18 (Correct answer)
- 20
Correct answer: 18
The ratio 2:3 means girls = 3/(2+3) × 30 = 3/5 × 30 = 18.
Question 4: Simplify: √144
- 72
- 14.4
- 12 (Correct answer)
- 11
Correct answer: 12
12 × 12 = 144, so √144 = 12.
Question 5: If a shirt originally costs $60 and is on sale for 30% off, how much does the customer pay?
- $30
- $18
- $42 (Correct answer)
- $48
Correct answer: $42
Discount = 30% × $60 = $18; sale price = $60 − $18 = $42.
Question 6: Which value of y satisfies the inequality 2y + 3 > 11?
- y = 3
- y = 4
- y = 5 (Correct answer)
- y = 2
Correct answer: y = 5
2y > 8, so y > 4; the only value greater than 4 in the choices is y = 5.
Question 7: On a coordinate plane, what is the distance between points (1, 2) and (4, 6)?
- 5 (Correct answer)
- 7
- 3
- 25
Correct answer: 5
Distance = √((4−1)² + (6−2)²) = √(9 + 16) = √25 = 5.
West B Test Mathematics 4
A car travels 240 miles in 4 hours.
What is its average speed in miles per hour?