NBT Quantitative Literacy Ratio and Percentage — Questions and Answers
Question 1: A recipe uses flour and sugar in the ratio 3:1. If you use 600g of flour, how much sugar do you need?
- 300g
- 100g
- 200g (Correct answer)
- 600g
Correct answer: 200g
The ratio 3:1 means sugar is one third of the flour. 600 / 3 = 200g of sugar.
Question 2: A jacket costs R800 and is discounted by 25%. What is the sale price?
- R600 (Correct answer)
- R200
- R775
- R750
Correct answer: R600
25% of R800 = R200 discount. Sale price = 800 - 200 = R600.
Question 3: A class has 18 girls and 12 boys. What is the ratio of girls to boys in simplest form?
- 2:3
- 6:4
- 3:2 (Correct answer)
- 18:12
Correct answer: 3:2
18:12 divides by 6 to give 3:2, the simplest form of the ratio of girls to boys.
Question 4: A learner scored 36 out of 45 on a test. What is this as a percentage?
- 72%
- 75%
- 85%
- 80% (Correct answer)
Correct answer: 80%
36 / 45 = 0.8, which is 80%.
Question 5: A R1 200 deposit earns 8% simple interest in one year. How much interest is earned?
- R120
- R96 (Correct answer)
- R80
- R960
Correct answer: R96
8% of R1 200 = 0.08 x 1 200 = R96 interest.
Question 6: Petrol increases from R20 to R23 per litre. What is the percentage increase?
- 13%
- 15% (Correct answer)
- 3%
- 23%
Correct answer: 15%
Increase = R3 on R20. 3 / 20 = 0.15 = 15% increase.
Question 7: Two friends share R450 in the ratio 5:4. How much does the friend with the larger share receive?
- R200
- R225
- R270
- R250 (Correct answer)
Correct answer: R250
Total parts = 5 + 4 = 9. Each part = 450 / 9 = R50. The larger share is 5 x 50 = R250.
Question 8: If 60% of a number is 90, what is the number?
- 150 (Correct answer)
- 54
- 120
- 180
Correct answer: 150
If 60% = 90, then 1% = 1.5, so 100% = 150. The number is 150.
NBT Quantitative Literacy Ratio and Percentage
A recipe uses flour and sugar in the ratio 3:1.
If you use 600g of flour, how much sugar do you need?