Mastering Percentage for Competitive Exam Success

Percentage

Q. A student scored 80 marks out of 100 in a test. What is his percentage score?

A. 70%
B. 80%
C. 90%
D. 100%

Solution

Percentage = (80/100) * 100 = 80%

Correct Answer: B — 80%

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Q. A student scored 80 marks out of 100 in a test. What is the percentage of marks scored?

A. 70%
B. 80%
C. 90%
D. 60%

Solution

Percentage = (80/100) * 100 = 80%

Correct Answer: B — 80%

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Q. A student scored 80 marks out of 100 in Mathematics. What is the percentage of marks scored?

A. 70%
B. 80%
C. 90%
D. 60%

Solution

Percentage = (80/100) * 100 = 80%

Correct Answer: B — 80%

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Q. A student scored 80% in a test and got 40 questions correct. How many questions were on the test?

A. 50
B. 60
C. 70
D. 80

Solution

Let total questions be x. 80% of x = 40. So, x = 40 / (80/100) = 50.

Correct Answer: B — 60

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Q. A student scored 80% in a test. If the total marks are 200, how many marks did the student score?

A. 160
B. 180
C. 150
D. 140

Solution

80% of 200 = (80/100) * 200 = 160.

Correct Answer: A — 160

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Q. A student scored 80% in Mathematics and 70% in Science. If the maximum marks for each subject are 200, what is the total percentage of marks obtained by the student?

A. 75%
B. 76%
C. 77%
D. 78%

Solution

Total marks obtained = (80/100)*200 + (70/100)*200 = 160 + 140 = 300. Total maximum marks = 200 + 200 = 400. Percentage = (300/400)*100 = 75%.

Correct Answer: B — 76%

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Q. A student scored 80% in Mathematics and 70% in Science. If the maximum marks for each subject are 100, what is the percentage of marks obtained by the student in both subjects combined?

A. 75%
B. 76%
C. 77%
D. 78%

Solution

Total marks obtained = 80 + 70 = 150. Total maximum marks = 200. Percentage = (150/200) * 100 = 75%.

Correct Answer: B — 76%

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Q. A student scored 80% in Mathematics and 70% in Science. If the maximum marks for each subject are 100, what is the total percentage of marks obtained by the student?

A. 75%
B. 78%
C. 70%
D. 80%

Solution

Total marks obtained = 80 + 70 = 150. Total maximum marks = 200. Percentage = (150/200) * 100 = 75%.

Correct Answer: A — 75%

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Q. A student scored 80% in Mathematics and 70% in Science. If the total marks in each subject are 100, what is the average percentage score?

A. 75%
B. 76%
C. 77%
D. 78%

Solution

Average percentage = (80 + 70) / 2 = 150 / 2 = 75%.

Correct Answer: B — 76%

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Q. A student scored 80% in Mathematics and 70% in Science. If the total marks in each subject are 200, what is the total percentage of marks obtained?

A. 75%
B. 76%
C. 77%
D. 78%

Solution

Marks in Mathematics = 0.8 * 200 = 160. Marks in Science = 0.7 * 200 = 140. Total marks = 160 + 140 = 300. Total percentage = (300 / 400) * 100 = 75%.

Correct Answer: B — 76%

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Q. A student scored 80% on a test with 50 questions. How many questions did he answer correctly?

A. 40
B. 45
C. 35
D. 50

Solution

80% of 50 = (80/100) * 50 = 40 questions.

Correct Answer: A — 40

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Q. If 15% of a number is 45, what is the number?

A. 250
B. 300
C. 350
D. 400

Solution

Let the number be x. Then, 0.15x = 45. Therefore, x = 45/0.15 = 300.

Correct Answer: B — 300

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Q. If 20% of a number is 50, what is the number?

A. 200
B. 250
C. 300
D. 400

Solution

Let the number be x. Then, 0.2x = 50. Therefore, x = 50 / 0.2 = 250.

Correct Answer: A — 200

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Q. If 30% of a number is 150, what is the number?

A. 400
B. 450
C. 500
D. 600

Solution

Let the number be x. Then, 0.3x = 150. Therefore, x = 150 / 0.3 = 500.

Correct Answer: B — 450

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Q. If 40% of a number is 80, what is the number?

A. 150
B. 200
C. 250
D. 300

Solution

Let the number be x. Then, 0.4x = 80. So, x = 80 / 0.4 = 200.

Correct Answer: B — 200

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Q. If 45% of a number is 90, what is the number?

A. 150
B. 200
C. 250
D. 300

Solution

Let the number be x. 0.45x = 90, x = 90/0.45 = 200

Correct Answer: B — 200

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Q. If 60% of a number is 120, what is the number?

A. 150
B. 180
C. 200
D. 250

Solution

Let the number be x. 0.6x = 120, x = 120/0.6 = 200

Correct Answer: C — 200

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Q. If 60% of a number is 240, what is the number?

A. 360
B. 400
C. 420
D. 480

Solution

Let the number be x. Then, 0.6x = 240. Therefore, x = 240/0.6 = 400.

Correct Answer: B — 400

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Q. If a bank offers 5% interest per annum, how much interest will be earned on a principal of $2000 in 2 years?

A. 200
B. 100
C. 150
D. 250

Solution

Interest = Principal * Rate * Time = 2000 * (5/100) * 2 = $200.

Correct Answer: B — 100

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Q. If a car travels 150 km in 3 hours, what is the percentage of speed if the average speed is 50 km/h?

A. 100%
B. 75%
C. 50%
D. 125%

Solution

Average speed = 150 km / 3 h = 50 km/h. Percentage of average speed = (50/50) * 100 = 100%.

Correct Answer: A — 100%

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Q. If a car's value depreciates by 15% and its original value was $20,000, what is its new value?

A. 17000
B. 18000
C. 19000
D. 16000

Solution

Depreciation = 15% of $20,000 = $3,000. New value = $20,000 - $3,000 = $17,000.

Correct Answer: A — 17000

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Q. If a car's value depreciates by 15% each year and its current value is $20,000, what will be its value after one year?

A. $15,000
B. $16,500
C. $17,000
D. $18,000

Solution

Value after one year = 20,000 - (15/100)*20,000 = 20,000 - 3,000 = $17,000.

Correct Answer: B — $16,500

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Q. If a jacket is marked at $120 and is sold at a 25% discount, what is the sale price?

A. $80
B. $85
C. $90
D. $95

Solution

Discount = 25% of 120 = 30. Sale price = 120 - 30 = 90.

Correct Answer: A — $80

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Q. If a jacket is marked at $150 and is sold for $120, what is the discount percentage?

A. 15%
B. 20%
C. 25%
D. 30%

Solution

Discount = 150 - 120 = 30. Discount percentage = (30 / 150) * 100 = 20%.

Correct Answer: C — 25%

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Q. If a jacket is priced at $80 and is marked down by 30%, what is the final price?

A. 56
B. 60
C. 54
D. 58

Solution

30% of $80 = $24. Final price = $80 - $24 = $56.

Correct Answer: A — 56

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Q. If a man earns $1200 after a 20% raise, what was his original salary?

A. $900
B. $1000
C. $1100
D. $1200

Solution

Let the original salary be x. After a 20% raise, x + 0.2x = 1.2x = 1200. Thus, x = 1200 / 1.2 = 1000.

Correct Answer: B — $1000

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Q. If a man earns $1200 after a 20% raise, what was his salary before the raise?

A. $900
B. $1000
C. $1100
D. $1200

Solution

Let the original salary be x. After a 20% raise, the salary is x + 0.2x = 1.2x. Given 1.2x = 1200, we find x = 1200 / 1.2 = 1000.

Correct Answer: B — $1000

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Q. If a person earns $1200 after a 20% raise, what was his salary before the raise?

A. $1000
B. $1100
C. $900
D. $950

Solution

Let the original salary be x. After a 20% raise, the salary is x + 0.2x = 1.2x. Therefore, 1.2x = 1200, so x = 1200 / 1.2 = $1000.

Correct Answer: A — $1000

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Q. If a person earns $5000 and spends 60% of it, how much does he save?

A. $1500
B. $2000
C. $2500
D. $3000

Solution

Spending = 60% of 5000 = 3000. Savings = 5000 - 3000 = $2000.

Correct Answer: B — $2000

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Q. If a person invests $2000 at an interest rate of 5% per annum, how much interest will he earn in 3 years?

A. 300
B. 200
C. 150
D. 250

Solution

Simple interest = Principal * Rate * Time = 2000 * 0.05 * 3 = $300.

Correct Answer: A — 300

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