Percentage problems
- 1. What percent is 3% of 5%?
Options- A. 15%
- B. 1.5%
- C. 0.15%
- D. None of these Discuss
Correct Answer: None of these
Explanation:
Required percent = [(3/100) / (5/100)] x 100]%
= [(3/100) x (100/5) x 100] %
= 60%
- 2. 75% of 480 = (?) x 15?
Options- A. 32
- B. 18
- C. 360
- D. None of these Discuss
Correct Answer: None of these
Explanation:
Let 75% of 480 = A x 15.
? (75 x 480)/100 = 15A
? A = (75 x 480)/ (100 x 15) = 24
- 3. 30 quintals is what percent of 2 metric tonnes?
Options- A. 15%
- B. 1.5%
- C. 150%
- D. 30% Discuss
Correct Answer: 150%
Explanation:
Required percent = {30/(2 x 10)} x 100 % = 150%
- 4. A number exceeds 20% of itself by 40. The number is?
Options- A. 50
- B. 60
- C. 80
- D. 320 Discuss
Correct Answer: 50
Explanation:
? A - 20% of A = 40
? A - A/5 = 40
? 4A/5 =40
? A = (5 x 40)/4 = 50.
- 5. x% of y is y% of?
Options- A. x
- B. 100x
- C. x/100
- D. y/100 Discuss
Correct Answer: x
Explanation:
Let x% of y = y% of A, then
? xy / 100 = yA/100
? A = (xy/100) x (100/y) = x
- 6. 12.5% of 192 = 50% of?
Options- A. 48
- B. 96
- C. 24
- D. None of these Discuss
Correct Answer: 48
Explanation:
Let 12.5% of 192 = 50% of A,
?(12.5 x 192) / 100 = (50 x A) / 100
? A = (12.5 x 192) / 50 = 48
- 7. If 37 1/ 2% of a number is 900,then 62 1/ 2% of the number is?
Options- A. 1200
- B. 1350
- C. 1500
- D. 540 Discuss
Correct Answer: 1500
Explanation:
Let 371/2% of A = 900
? {(75/2) x A} x 100 = 900
? A = (900 x 2 x 100) / 75 = 2400
So, 621/2% of A = (125/2) x (1/100) x 2400 =1500
- 8. Subtracting 6% of A from A is equivalent to multiplying A by how much?
Options- A. 0.94
- B. 9.4
- C. 0.094
- D. 94 Discuss
Correct Answer: 0.94
Explanation:
Let A - 6% of A = AB.
? (94 x A) / 100 = AB
? B = 0.94
- 9. By how much is 30% of 80 greater than 4/5 th of 25?
Options- A. 2
- B. 4
- C. 10
- D. 15 Discuss
Correct Answer: 4
Explanation:
It is (30 x 80)/100 - (4 x 25)/ 5 = 24 - 20 = 4
- 10. The price of an article is cut by 10%. To restore it to the former value. The new price must be increased by?
Options- A. 10%
- B. 91/11
- C. 111/9
- D. 11% Discuss
Correct Answer: 111/9
Explanation:
Let original price = Rs. 100.
Then, new price = Rs. 90.
? Increased on Rs. 90 = Rs. 10
Required increase % = (10 x 100) / 90 % = 111/9%
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