Mathematics for IGCSE & O level - Percentages (Section 3)
1
What is 12.5% of 80?
Antwort
(B)
10
2
A jacket is on sale for $72 after a 20% discount. What was the original price of the jacket?
Antwort
(C)
$90
3
Which of the following statements are true regarding percentage change?
Antwort
A
B
D
4
A recipe calls for 200g of flour. If you want to make 150% of the recipe, how much flour do you need?
Antwort
(C)
300g
5
Laura earns £12000 per year plus a commission of 7.5% on her sales. Last year she sold £76,000 of goods. What was her average monthly pay last year?
Antwort
(B)
£1775
6
If $1500 is invested in an account with 4% compound interest annually, what is the value after 4 years?
Antwort
(B)
$1749.78
7
What values indicate a percentage decrease?
Antwort
A
B
D
8
Which of the following represents simple interest?
Antwort
(B)
A = P + Prn
9
Key points in percentages include:
Antwort
A
B
D
10
What is 150% expressed as a decimal?
Antwort
(B)
1.5
11
If a number increases by 10%, then decreases by 10%, what is the overall impact?
Antwort
B
D
12
What is 100% of any number?
Antwort
(C)
The number itself
13
If a company's revenue increased by 5% year on year and the starting revenue was $100,000, what is the revenue after the increase?
Antwort
(C)
$105,000
14
Craig puts $240 into a savings account that earns compound interest of 6% annually. What will his savings be worth after 3 years?
Antwort
(B)
$285.74
15
When calculating percentage decrease, which statements are true?
Antwort
A
B
C
16
What is 25% of 400?
Antwort
(B)
100
17
What is the result of decreasing a number by 50%?
Antwort
(B)
Half the original number
18
Which situations represent a percentage decrease?
Antwort
A
C
D
19
Which statement is equivalent to saying an item is marked down by 20%?
Antwort
(B)
The sale price is 80% of the original price.
20
If a store offers 'buy one get one half price', what is the percentage discount on the cheaper item?
Antwort
(C)
50%
21
What percentage is 15 out of 75?
Antwort
(C)
20%
22
What is 66.67% of 300?
Antwort
(B)
100
23
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 revenue from the remaining 20 cups?
Antwort
(B)
$19.00
24
What is true about percentage decrease?
Antwort
A
B
C
D
25
What is the profit on an item which costs $1.40 per kg and sells for $1.80 per kg?
Antwort
(B)
$0.40
26
If you pay $8.00 in sales tax on a $100 purchase, what is the sales tax rate?
Antwort
(B)
8%
27
If a quantity is decreased by 50%, what is the resulting value compared to the original?
Antwort
(C)
Half the original
28
What is 90% of 1000?
Antwort
(B)
900
29
What does 'percent' mean?
Antwort
(B)
Out of a hundred
30
Salim has $4000 to invest for 5 years. The bank offers two options: 3.5% simple interest or 3.25% compound interest. Which option is better?
Antwort
(A)
3.5% simple interest
31
Which statements are true about calculating percentage profit or loss?
Antwort
A
B
C
32
Francoise buys a car for $9500 and sells it a year later for $8300. What is her percentage loss?
Antwort
(C)
12.6%
33
If 25% of a number is 10, what is the number?
Antwort
(B)
40
34
If a TV is on sale for $600 after a 20% discount, what was its original price?
Antwort
(D)
$750
35
What number is 20% of 80?
Antwort
(B)
16
36
If the original value of an item is £250 and reduces by 45% over 5 years, what is its final value?
Antwort
(A)
£68.75
37
If the price of a car increases from $20,000 to $21,000, what is the percentage increase?
Antwort
(B)
5%
38
What is the percentage decrease if a price falls from $20 to $15?
Antwort
(D)
25%
39
What are valid interpretations for the term 'percentage'?
Antwort
A
B
C
40
Which of the following scenarios represents a percentage increase?
Antwort
A
D
41
What percentage is represented by the decimal 0.05?
Antwort
(C)
5%
42
If a quantity increases by 200%, what is the final value compared to the original?
Antwort
(C)
Tripled
43
Which is larger, 3/4 or 70%?
Antwort
(A)
3/4
44
Which option correctly calculates the new amount after decreasing a value by 12%?
Antwort
(B)
Multiply by 0.88
45
A shopkeeper buys an article for $22 and sells it for $27. What is his percentage profit?
Antwort
(A)
22.7%
46
What represents a 10% increase?
Antwort
(B)
Multiplying by 1.10
47
If a shopkeeper buys an article for $22 and sells it for $27, what is the profit?
Antwort
(B)
$5
48
Which of the following represents a situation where a percentage increase is appropriate?
Antwort
A
C
49
Which of the following statements is/are true regarding percentage change?
Antwort
A
B
50
A health club offers a 20% discount for membership. If membership usually costs $35, how much does it cost with the discount?
