Mathematics for IGCSE & O level - Percentages (Section 4)
1
What is 60% of 90?
Trả lời
(C)
54
2
Which situations involve calculating a percentage?
Trả lời
A
B
D
3
What is the percentage equivalent of 0.65?
Trả lời
(C)
65%
4
What is 0.012 as a percentage?
Trả lời
(C)
1.2%
5
What is the percentage profit if an item is bought for $1.40 and sold for $1.80?
Trả lời
(C)
28.6%
6
What are ways to calculate the percent of a value?
Trả lời
B
C
7
What is the value of the investment after 5 years, given Salim invests $4000 with 3.25% compound interest?
Trả lời
(A)
$4693.65
8
If sales tax is 7%, what is the total cost of an item that costs $50 before tax?
Trả lời
(C)
$53.50
9
What is 3/8 as a percentage?
Trả lời
(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?
Trả lời
(C)
118,587
11
What percentage of 500 is 25?
Trả lời
(B)
5%
12
What is the percentage equivalent to the fraction 3/4?
Trả lời
(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?
Trả lời
(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?
Trả lời
(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?
Trả lời
(B)
$728.05
16
What is 120% of 50?
Trả lời
(B)
60
17
A retailer buys a product for $40 and sells it for $60. What is their percentage profit?
Trả lời
(D)
50%
18
If 30% of a number is 12, what is 50% of that number?
Trả lời
(B)
18
19
If the sales tax rate is 6.5%, what is the tax on an item that costs $100?
Trả lời
(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?
Trả lời
(B)
$13.23
21
What is the percentage equivalent of 7/10?
Trả lời
(C)
70%
22
Which of these are true about a percentage?
Trả lời
B
C
D
23
What is 15% of $80?
Trả lời
(C)
$12
24
Which scenarios involve a percentage decrease?
Trả lời
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?
Trả lời
(C)
3 cups
26
If an item is marked up by 30%, what is the new price as a percentage of the original?
Trả lời
(D)
130%
27
Which of the following situations demonstrate a percentage increase?
Trả lời
A
B
28
Which of the following represents an increase of 25%?
Trả lời
(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?
Trả lời
(C)
1.5
30
If you earn a commission of 8% on sales, how much commission would you earn on $500 in sales?
Trả lời
(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?
Trả lời
(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?
Trả lời
(C)
$4665.38
33
In simple interest, interest is calculated on the
Trả lời
(A)
Original amount
34
What is 140% of 70?
Trả lời
(C)
98
35
Bob's Budget Bargains buys washing machines for $270 and sells them for $330. What is their percentage profit?
Trả lời
(A)
22.2%
36
Which of the following is equivalent to a 20% discount?
Trả lời
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?
Trả lời
(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?
Trả lời
(C)
$110.40
39
If you get 90% on a test with 40 questions, how many questions did you answer correctly?
Trả lời
(A)
36
40
A store offers a 20% discount. If the original price is $10, what is the final price?
Trả lời
(B)
$8
41
If 12 is 30% of a number, what is that number?
Trả lời
(D)
40
42
A worker's pay is increased by 5%. If their old salary was $30,000, what is the new salary?
Trả lời
(C)
$31,500
43
Which fraction is equivalent to 60%?
Trả lời
(C)
3/5
44
What is the percentage loss when a car is bought for $9500 and sold for $8300?
Trả lời
(B)
12.6%
45
If an item originally costs $50 and is discounted by 10%, what is the sale price?
Trả lời
(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?
Trả lời
(C)
$38856
47
If an item costs $12 now and the price increases by 5% annually, what will be the price after 1 year?
Trả lời
(B)
$12.60
48
A television is sold for $630, making a profit of 5%. What was the cost price?
Trả lời
(C)
$600
49
What does the 'n' represent in the compound interest formula?
Trả lời
(D)
Number of years
50
What are the possible outcomes in the long run when the inflation occurs?
