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| Tutorial ID | Title | Tutorial | Video Tutorial | Revision Notes | Revision Questions | |
|---|---|---|---|---|---|---|
| 5.2 | Percentages, Fractions and Decimals |
1. . 327 out of a sample of 100,000 people were positive with virus X after testing. What is the percentage of infected people in the sample?
Correct Answer: C
2. . The cost of living in a country Y during an economic crisis increased by an index of 0.0167. What was the value of the yearly inflation (increase in the living cost) in that country?
Correct Answer: D
3. . It is known from the previous chapter that the numbers x and y in the formula of golden ratio have the following relationship
X + Y/X = x/y = Φwhere
φ = 1 + √5/2 = 1.6180339887Which of the following relations between x and y is correct?
Correct Answer: A
4. . 5 out of 26 students in a class scored more than 90% in an exam. What percentage of the class had this achievement?
Correct Answer: C
5. . A forward scored 18 goals out of 60 total shots on target during a season. What is the scoring percentage of this player?
Correct Answer: B
6. . The current EUR - USD conversion rate is 1 EUR = 1.14 USD. What is 1 USD worth in terms of EUR percentage?
Correct Answer: C
7. . What is the value of 31/53 if expressed as a percentage in three significant figures?
Correct Answer: D
8. . Which number is the biggest?
Correct Answer: B
9. . Four postmen had to deliver the same number of packs in one working day. In the first three hours of service, the first postman delivered 37 pack out of 83, the second postman delivered 45.8% of packs, the third postman delivered 44/100 of packs and the fourth postman calculated the ratio of delivered packs out of total and got a result of 0.456. Which postman was the least effective in the first three hours of service?
Correct Answer: C
10. . The value 76.5% corresponds to
Correct Answer: D
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