Mathematics for IGCSE & O level - Percentages (Section 2)
1
What is the fractional equivalent of 75%?
2
Selena invests $4000 and receives 5% interest a year which is added to the amount each year. How much is her investment worth in total after 6 years?
4
Which situations result in a decrease in percentage?
6
If an item's price increases by 10% and then decreases by 10%, is the final price:
7
A dress costs $75 before tax. If the sales tax rate is 8%, what is the total cost of the dress?
8
A student scores 80% on a test. If the test had 50 questions, how many questions did they answer correctly?
9
If a store is having a '30% off' sale, what percent of the original price are you paying?
11
If you want to increase a value by 50% and the starting amount is 100, what is the final result?
12
If an item costs $100 and the sales tax is 6%, what is the total cost including tax?
13
A store offers a 'buy one get one 50% off' sale. Which of the following statements is true?
14
A shopkeeper buys an item for $100 and sells it for $120. What is the percentage profit?
15
Which of the following are correct ways to calculate a discount on a product?
16
A company's revenue in 2022 was $200,000. In 2023, revenue increased by 15%. What was the revenue in 2023?
17
In a sale, the price of a product is reduced from $50 to $40. What is the percentage decrease?
18
If a store offers a 40% discount on all items, and an item is originally priced at $150, what is the sale price?
20
Which are valid ways to express a percentage?
21
A shirt is priced at $40. If there is a 10% discount, what is the sale price?
22
What is the value of Martin's shares after 10 years if they increased by 7.5% each year and the initial value was $8000?
23
Given that an investment earns compound interest, which statement is true about how it is calculated?
Відповідь(B)
Interest earned in each period is added to the principal
24
What is the result of expressing 0.005 as a percentage?
25
If the value of an item is reduced by 11% annually and its original value is $3500, what is its value after 7 years?
26
Express 4% as a fraction in its simplest form.
27
What is the difference between simple and compound interest on an investment of $4000 for 2 years at 5% per annum?
28
If a recipe is scaled down to 75%, by what factor are you multiplying the ingredients?
29
Is it better to invest $1000 for five years at 8% compound interest or for four years at 9% compound interest?
30
In the formula A = P(1 + r/100)^n, what does 'n' represent?
Відповідь(D)
Number of years the money is invested
31
Which statements are true about a 100% increase?
32
Express 0.02 as a percentage.
33
What value is 200% of 50?
34
If the price of an item increases from $10 to $12, what is the percentage increase?
35
A shopkeeper buys potatoes at $1.40 per kilogram and sells them for $1.80 per kilogram. What is the percentage profit?
36
If the price of an item is increased by 18%, the multiplier used is:
37
What is the interest on $500 at a simple interest rate of 2% for one year?
38
Which of the following is equivalent to 0.4?
39
Which expression correctly calculates the sale price after a 15% discount on an item originally priced at P?
40
What is the decimal equivalent of 15%?
42
If the price of an item is increased by 5% and then by another 10%, what is the overall percentage increase?
43
If a store offers '50% off' of an item, what is the relationship between the sale price and original price?
Відповідь(B)
The sale price is half the original price.
44
Find the difference in interest earned by investing $500 for three years at 12% simple interest, or for three years at 10% compound interest.
45
What scenarios involve percentage changes?
46
What is 75% expressed as a decimal?
47
What is the decimal equivalent to 6.5%?
48
Convert 35% to a decimal.
49
If 40% of a number is 20, what is the number?
50
If a school has 200 students and 60% are girls, how many girls are there?
