Percentage
Q. If a product is marked at $200 and sold at a 10% profit, what is the cost price?
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A.
$150
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B.
$160
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C.
$180
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D.
$190
Solution
Let the cost price be x. Then, 1.1x = 200 => x = 200 / 1.1 = 181.82.
Correct Answer: B — $160
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Q. If a shirt is sold for $240 after a discount of 20%, what was the original price of the shirt?
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A.
$300
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B.
$280
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C.
$250
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D.
$320
Solution
Let the original price be x. After a 20% discount, the selling price is 80% of x. Therefore, 0.8x = 240; x = 240 / 0.8 = 300.
Correct Answer: A — $300
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Q. If a shirt is sold for $40 after a 20% discount, what was its original price?
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A.
$32
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B.
$36
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C.
$48
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D.
$50
Solution
Let original price be x. 0.8x = 40, x = 40/0.8 = 50
Correct Answer: C — $48
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Q. If a shirt is sold for $40 after a discount of 20%, what was the original price of the shirt?
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A.
$50
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B.
$60
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C.
$45
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D.
$55
Solution
Let the original price be x. Then, 0.8x = 40, so x = 40/0.8 = $50.
Correct Answer: A — $50
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Q. If a shirt is sold for $45 after a discount of 10%, what was the original price of the shirt?
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A.
$50
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B.
$55
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C.
$60
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D.
$65
Solution
Let the original price be x. After a 10% discount, the selling price is x - 0.1x = 0.9x. So, 0.9x = 45. Therefore, x = 45/0.9 = $50.
Correct Answer: A — $50
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Q. If a student answered 85% of the questions correctly in an exam and there were 120 questions, how many questions did he answer correctly?
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A.
90
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B.
95
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C.
100
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D.
102
Solution
Correct answers = 0.85 * 120 = 102.
Correct Answer: C — 100
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Q. If a student answered 90 questions correctly out of 120, what is the percentage of correct answers?
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A.
70%
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B.
75%
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C.
80%
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D.
85%
Solution
Percentage of correct answers = (90 / 120) * 100 = 75%.
Correct Answer: C — 80%
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Q. If a student increases his score from 50 to 70 in a test, what is the percentage increase in his score?
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A.
30%
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B.
40%
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C.
50%
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D.
20%
Solution
Percentage increase = ((70 - 50) / 50) * 100 = 40%.
Correct Answer: B — 40%
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Q. If a student needs to score at least 75% to pass an exam and he scored 300 out of 400, did he pass?
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A.
Yes
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B.
No
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C.
Cannot be determined
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D.
None of the above
Solution
Percentage = (300/400)*100 = 75%. Since he scored exactly 75%, he passes.
Correct Answer: A — Yes
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Q. If a student needs to score at least 75% to pass and he scored 300 marks out of 400, did he pass?
-
A.
Yes
-
B.
No
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C.
Cannot determine
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D.
Depends on the subject
Solution
Percentage = (300/400) * 100 = 75%. He passed.
Correct Answer: A — Yes
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Q. If a student scored 75% in an exam and the total marks were 800, how many marks did he score?
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A.
600
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B.
650
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C.
700
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D.
750
Solution
Marks scored = 75% of 800 = 0.75 * 800 = 600.
Correct Answer: A — 600
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Q. If a student scores 45 out of 60 in an exam, what is his percentage score?
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A.
70%
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B.
75%
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C.
80%
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D.
85%
Solution
Percentage score = (45 / 60) * 100 = 75%.
Correct Answer: B — 75%
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Q. If a student scores 60 marks out of 80 in a test, what is the percentage score?
-
A.
70%
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B.
75%
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C.
80%
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D.
85%
Solution
Percentage = (60 / 80) * 100 = 75%.
Correct Answer: B — 75%
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Q. If a student scores 90 marks out of 120 in an exam, what is his percentage score?
-
A.
70%
-
B.
75%
-
C.
80%
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D.
85%
Solution
Percentage score = (90/120) * 100 = 75%.
Correct Answer: C — 80%
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Q. If a student scores 90 marks out of 120, what is the percentage of marks obtained?
-
A.
70%
-
B.
75%
-
C.
80%
-
D.
85%
Solution
Percentage = (90/120) * 100 = 75%.
Correct Answer: C — 80%
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Q. If a student scores 90 marks which is 75% of the total marks, what are the total marks?
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A.
100
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B.
120
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C.
150
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D.
200
Solution
Total marks = 90 / (75/100) = 90 * (100/75) = 120.
Correct Answer: B — 120
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Q. In a class, 60% of the students are girls. If there are 24 girls, how many students are there in total?
Solution
Let the total number of students be x. Then, 0.6x = 24. Therefore, x = 24 / 0.6 = 40.
Correct Answer: B — 36
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Q. In a class, 60% of the students are girls. If there are 30 boys, how many students are there in total?
Solution
Let the total number of students be x. Then, 40% of x = 30 (boys). So, x = 30 / 0.4 = 75. Total students = 75.
Correct Answer: B — 60
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