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