IDAT Numerical Reasoning and Data Interpretation 2

Question 1

A bar chart shows that a country's exports rose from 400 to 460 units over one year. What is the percentage change?

Accepted Answer

15%

Answer

(460 − 400) ÷ 400 × 100 = 60 ÷ 400 × 100 = 15%.

Question 2

If an applicant's score increases by 12 points to reach 84, what was the original score?

Accepted Answer

72

Answer

84 − 12 = 72.

Question 3

A line graph shows expenditure values of $5K, $8K, $6K, $9K, and $7K over five months. What is the median expenditure?

Accepted Answer

$7K

Answer

Arranged in order: $5K, $6K, $7K, $8K, $9K; the middle (3rd) value is $7K.

Question 4

An office uses 240 reams of paper per month. If usage decreases by 15%, how many reams will be used per month?

Accepted Answer

204 reams

Answer

240 × 0.15 = 36; 240 − 36 = 204 reams.

Question 5

A table shows three project costs: $14,500; $22,300; and $8,200. What is the total combined cost?

Accepted Answer

$45,000

Answer

$14,500 + $22,300 + $8,200 = $45,000.

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