Mathematics for IGCSE & O level - Percentages (Section 4)
1
What is 60% of 90?
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(C)
54
2
Which situations involve calculating a percentage?
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A
B
D
3
What is the percentage equivalent of 0.65?
คำตอบ
(C)
65%
4
What is 0.012 as a percentage?
คำตอบ
(C)
1.2%
5
What is the percentage profit if an item is bought for $1.40 and sold for $1.80?
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(C)
28.6%
6
What are ways to calculate the percent of a value?
คำตอบ
B
C
7
What is the value of the investment after 5 years, given Salim invests $4000 with 3.25% compound interest?
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(A)
$4693.65
8
If sales tax is 7%, what is the total cost of an item that costs $50 before tax?
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(C)
$53.50
9
What is 3/8 as a percentage?
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(B)
37.5%
10
Pulova has high inflation. In 2023, prices increased by 15% a month for the first six months and 12.5% for the next six months. If a car cost 78,000 dubs (their unit of currency) in January 2023, how much did it cost in January 2024?
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(C)
118,587
11
What percentage of 500 is 25?
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(B)
5%
12
What is the percentage equivalent to the fraction 3/4?
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(D)
75%
13
A salesman earns a commission of 5% on all sales. If he sells $1000 worth of goods, how much commission does he earn?
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(B)
$50
14
A store marks up the price of an item by 20%. If the original price was $20, what is the new price?
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(B)
$24
15
An item's value decreases by 15% each year. If the original value is $1400, what is the value after 4 years?
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(B)
$728.05
16
What is 120% of 50?
คำตอบ
(B)
60
17
A retailer buys a product for $40 and sells it for $60. What is their percentage profit?
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(D)
50%
18
If 30% of a number is 12, what is 50% of that number?
คำตอบ
(B)
18
19
If the sales tax rate is 6.5%, what is the tax on an item that costs $100?
คำตอบ
(B)
$6.50
20
If an item costs $12 now and its price increases by 5% per year due to inflation, what will it cost in 2 years' time?
คำตอบ
(B)
$13.23
21
What is the percentage equivalent of 7/10?
คำตอบ
(C)
70%
22
Which of these are true about a percentage?
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B
C
D
23
What is 15% of $80?
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(C)
$12
24
Which scenarios involve a percentage decrease?
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A
C
25
If a cake recipe requires 2 cups of flour and you want to scale the recipe to 150%, how much flour do you need?
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(C)
3 cups
26
If an item is marked up by 30%, what is the new price as a percentage of the original?
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(D)
130%
27
Which of the following situations demonstrate a percentage increase?
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A
B
28
Which of the following represents an increase of 25%?
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(C)
Multiplying by 1.25
29
If an item increases in price by 50%, what factor is the new price multiplied by in comparison to the original?
คำตอบ
(C)
1.5
30
If you earn a commission of 8% on sales, how much commission would you earn on $500 in sales?
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(B)
$40
31
If the attendance at a football game was 12,000, which is 80% of the stadium's capacity, what is the full capacity?
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(C)
15,000
32
What is the total amount in the bond after 6 years, given that Andrew invested $3500 in a six-year bond that paid 5% compound interest for the first three years and 7.5% compound interest for the next three years?
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(C)
$4665.38
33
In simple interest, interest is calculated on the
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(A)
Original amount
34
What is 140% of 70?
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(C)
98
35
Bob's Budget Bargains buys washing machines for $270 and sells them for $330. What is their percentage profit?
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(A)
22.2%
36
Which of the following is equivalent to a 20% discount?
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A
C
D
37
Yassim invested $500 at 4% compound interest. How many years will it take for the value of the investment to be over $600?
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(B)
5 years
38
If a shopkeeper buys 100 cups for $1.20 each and sells 80 with a 15% profit and the remaining 20 at 95c each, what is the total revenue from the sale of 80 cups?
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(C)
$110.40
39
If you get 90% on a test with 40 questions, how many questions did you answer correctly?
คำตอบ
(A)
36
40
A store offers a 20% discount. If the original price is $10, what is the final price?
คำตอบ
(B)
$8
41
If 12 is 30% of a number, what is that number?
คำตอบ
(D)
40
42
A worker's pay is increased by 5%. If their old salary was $30,000, what is the new salary?
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(C)
$31,500
43
Which fraction is equivalent to 60%?
คำตอบ
(C)
3/5
44
What is the percentage loss when a car is bought for $9500 and sold for $8300?
คำตอบ
(B)
12.6%
45
If an item originally costs $50 and is discounted by 10%, what is the sale price?
คำตอบ
(C)
$45
46
Mr. Costa was given an 8% pay rise every year. His starting salary was $28,500. How much does he earn after four rises?
คำตอบ
(C)
$38856
47
If an item costs $12 now and the price increases by 5% annually, what will be the price after 1 year?
คำตอบ
(B)
$12.60
48
A television is sold for $630, making a profit of 5%. What was the cost price?
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(C)
$600
49
What does the 'n' represent in the compound interest formula?
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(D)
Number of years
50
What are the possible outcomes in the long run when the inflation occurs?
