Percentage problems
- 1. A number increased by 137 1/ 2 % and the increment is 33. The number is
Options- A. 27
- B. 22
- C. 24
- D. 25 Discuss
Correct Answer: 24
Explanation:
Let the number be N,
Then, 137.5% of N = 33
? N = (33 x 100)/137.5 = 24
- 2. A person's salary has increased from? 7200 to ? 8100. What is the percentage increased in his salary?.
Options- A. 25%
- B. 18%
- C. 162/3%
- D. 121/2% Discuss
Correct Answer: 121/2%
Explanation:
Percentage increased in salary = [(8100 - 7200)/7200] x 100
= [900/7200] x 100
= 12.5%
= 121/2%
- 3. If A's income is 5/6th of B's income, then B's income is more than A's income by
Options- A. 25/2%
- B. 15%
- C. 20%
- D. 25% Discuss
Correct Answer: 20%
Explanation:
Given, A = 5B/6
Let Income of B = N
? A = 5N/6
Required percentage = [(N - 5N/6) / (5N/6)] x 100
= [(6N - 5N)/5N] x 100
= (1/5) x 100 = 20%
- 4. 25% of what amount of money is equal to 12 1/ 2 of ? 180?
Options- A. ? 120
- B. ? 75
- C. ? 80
- D. ? 90 Discuss
Correct Answer: ? 90
Explanation:
Let the required amount of money be N.
Then, N x 25% = 180 x 121/2%
? N = (180 x 12.5)/25
= ? 90
- 5. 30% of a 3 digit number is 190.8. What will be 125% of that number?
Options- A. 759
- B. 785
- C. 795
- D. 779 Discuss
Correct Answer: 795
Explanation:
Let N be the number
Then, 30% of N = 190.8
? N = (190.8 x 100)/30 = 636
? 125% of 636 = (125 / 100) x 636 = 795
- 6. The monthly income of a person is ? 5000. If his income is increased by 30% then what is his monthly income now?
Options- A. ? 7000
- B. ? 5500
- C. ? 4500
- D. ? 6500 Discuss
Correct Answer: ? 6500
Explanation:
Monthly income of a person = ? 5000
Increment in income = (30/100) x 5000 = 1500
New income = 5000 + 15000 = ? 6500
- 7. When 35 is subtracted from a number, it reduced to its 80%. What is 4/5th of that number?
Options- A. 70
- B. 90
- C. 120
- D. 140 Discuss
Correct Answer: 140
Explanation:
Let the number be N.
Then N - 35 = 80N/100
? N - 4N/5 = 35
? N / 5 = 35
? N = 175
? Required number = 175 x (4/5)
= 35 x 4 = 140
- 8. If income of Vandana is 25% more than that of Aarti, then income of Aarti is how much per cent less than of Vandana?
Options- A. 18%
- B. 21%
- C. 20%
- D. 24% Discuss
Correct Answer: 20%
Explanation:
Let Aarti's income be ? 100
? Vandana's income = ? 125
? Aarti's income is ? 25 less than 125.
? Required percentage = (25/125) x 100% = 20%
- 9. 50 kg is what per cent of 250 kg?
Options- A. 26%
- B. 15%
- C. 20%
- D. 18% Discuss
Correct Answer: 20%
Explanation:
Required percentage = (50/250) x 100% = 20%
- 10. What is 32% of 3/8 th of 5000?
Options- A. 606
- B. 610
- C. 580
- D. 600 Discuss
Correct Answer: 600
Explanation:
32%of 3/8 of 5000 = (32/100) x (3/8) x 5000
= 4 x 3 x 50 = 600
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