IDAT Numerical Reasoning and Data Interpretation

Question 1

A project team completes 40% of a task in 6 days. At the same rate, how many more days are needed to finish the remaining 60%?

Accepted Answer

9 days

Answer

40% takes 6 days, so 1% takes 0.15 days; 60% × 0.15 = 9 days.

Question 2

A table shows that Department A has 120 employees and Department B has 80 employees. What percentage of the total workforce does Department B represent?

Accepted Answer

40%

Answer

80 ÷ (120 + 80) × 100 = 80 ÷ 200 × 100 = 40%.

Question 3

If a budget of $54,000 is distributed among three teams in the ratio 2:3:4, how much does the team with the largest share receive?

Accepted Answer

$24,000

Answer

Total parts = 9; largest share = (4/9) × $54,000 = $24,000.

Question 4

Sales figures for Q1–Q4 are $12K, $15K, $18K, and $21K. What is the average quarterly sales figure?

Accepted Answer

$16,500

Answer

($12K + $15K + $18K + $21K) ÷ 4 = $66K ÷ 4 = $16,500.

Question 5

A report shows a country's GDP grew from $200 billion to $250 billion in one year. What is the percentage increase?

Accepted Answer

25%

Answer

Increase = $50B; percentage = (50/200) × 100 = 25%.

(IDAT) International Diagnostic and Admission Test Practice Test

(IDAT) International Diagnostic and Admission Test Practice Test

IDAT Numerical Reasoning and Data Interpretation