NBT NBT Quantitative Literacy: Charts, Tables and Graphs 1

Question 1

A bar chart shows monthly sales: Jan = R12 000, Feb = R15 000, Mar = R9 000. By how much did sales change from February to March?

Accepted Answer

Decreased by R6 000

Answer

Sales went from R15 000 in Feb to R9 000 in Mar, a decrease of R6 000.

Question 2

A pie chart shows that 40% of students chose Mathematics, 35% chose Science, and the rest chose History. What percentage chose History?

Accepted Answer

25%

Answer

100% − 40% − 35% = 25% chose History.

Question 3

A line graph shows a company's profit rising steadily from R200 000 in 2019 to R500 000 in 2023. What is the average annual increase?

Accepted Answer

R75 000

Answer

Total increase = R300 000 over 4 years; average annual increase = R300 000 ÷ 4 = R75 000.

Question 4

A table shows that a shop sold 120 units at R25 each. What is the total revenue shown in the table?

Accepted Answer

R3 000

Answer

Total revenue = 120 × R25 = R3 000.

Question 5

In a dual bar chart comparing two schools' results, School A scored 72% and School B scored 84% in Mathematics. What is the difference?

Accepted Answer

12 percentage points

Answer

84% − 72% = 12 percentage points difference.

(NBT) National Benchmark Test Practice Test