HBS HBS Numerical Reasoning 1 — Questions and Answers
Question 1: A shop reduces the price of a jacket from $80 to $60. What is the percentage decrease?
- 20%
- 25% (Correct answer)
- 30%
- 33%
Correct answer: 25%
Percentage decrease = (20 ÷ 80) × 100 = 25%.
Question 2: If 4 workers can build a wall in 6 days, how many days will 8 workers take (same rate)?
- 2 days
- 3 days (Correct answer)
- 4 days
- 5 days
Correct answer: 3 days
Total worker-days = 4 × 6 = 24; with 8 workers: 24 ÷ 8 = 3 days.
Question 3: A number is divided by 4, then 5 is added. The result is 13. What is the original number?
- 28
- 32 (Correct answer)
- 36
- 40
Correct answer: 32
Let n be the number; n/4 + 5 = 13 → n/4 = 8 → n = 32.
Question 4: What is the ratio 45:60 in its simplest form?
- 3:4 (Correct answer)
- 4:5
- 9:12
- 15:20
Correct answer: 3:4
HCF of 45 and 60 is 15; 45÷15 : 60÷15 = 3:4.
Question 5: A number pattern goes: 2, 6, 18, 54, … What is the next term?
- 108
- 126
- 162 (Correct answer)
- 216
Correct answer: 162
Each term is multiplied by 3; 54 × 3 = 162.
Question 6: Sarah earns $12 per hour. She works 7.5 hours. How much does she earn?
- $84
- $88
- $90 (Correct answer)
- $96
Correct answer: $90
$12 × 7.5 = $90.
HBS HBS Numerical Reasoning 1
A shop reduces the price of a jacket from $80 to $60.
What is the percentage decrease?