HBS HBS Numerical Reasoning

Question 1

A shop reduces the price of a jacket from $80 to $60. What is the percentage decrease?

Accepted Answer

25%

Answer

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)?

Accepted Answer

3 days

Answer

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?

Accepted Answer

32

Answer

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?

Accepted Answer

3:4

Answer

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?

Accepted Answer

162

Answer

Each term is multiplied by 3; 54 × 3 = 162.

HBS - Henrietta Barnett School Practice Test