NBT NBT Quantitative Literacy: Charts, Tables and Graphs 2

Question 1

A pie chart represents a budget. If transport costs 72° of the circle, what percentage of the budget is spent on transport?

Accepted Answer

20%

Answer

Percentage = (72°/360°) × 100% = 20%.

Question 2

A line graph shows temperature falling from 28°C at noon to 16°C at midnight. What is the rate of change per hour over this 12-hour period?

Accepted Answer

1°C per hour decrease

Answer

Change = −12°C over 12 hours; rate = −12/12 = −1°C per hour (decrease of 1°C/h).

Question 3

A table shows distances between cities. Cape Town to Johannesburg = 1 400 km; Johannesburg to Durban = 600 km. How far is Cape Town from Durban via Johannesburg?

Accepted Answer

2 000 km

Answer

Total distance = 1 400 + 600 = 2 000 km.

Question 4

A bar chart shows learner numbers: Grade 10 = 300, Grade 11 = 250, Grade 12 = 200. What proportion of learners are in Grade 12?

Accepted Answer

26.7%

Answer

Total = 750; Grade 12 proportion = 200/750 × 100% ≈ 26.7%.

Question 5

A stacked bar chart shows that in March, Category A = 40 units and Category B = 60 units, for a total of 100. What percentage is Category A?

Accepted Answer

40%

Answer

Category A proportion = 40/100 × 100% = 40%.

(NBT) National Benchmark Test Practice Test

(NBT) National Benchmark Test Practice Test

NBT NBT Quantitative Literacy: Charts, Tables and Graphs 2