Percentage problems
- 1. 30% of 80/? = 24
Options- A. 3/10
- B. 3/17
- C. 1
- D. 2 Discuss
Correct Answer: 1
Explanation:
Let 30% of 80/y =24
? 24y = (30 x 80)/100
? y = (30 x 80)/ (24 x 100) =1
- 2. 8% of 96 =? of 1/25
Options- A. 19.2
- B. 7.68
- C. 1.92
- D. None of these Discuss
Correct Answer: None of these
Explanation:
Let 8% of 96 = y of 1/25
? (8 x 96)/100 = y/25
? y = (8 x 96 x 25)/100 = 192
- 3. If A is 90% of B, then what percent of A is B?
Options- A. 90
- B. 190
- C. 101.1
- D. 111.1 Discuss
Correct Answer: 111.1
Explanation:
? A = 90% of B
? A = (90 x B)/100
Let C% of A = B
Then, (C x A)/100 = B
? [C x {(90 x B)/100}] / 100 = B
? C = (100 x 100) / 90 =111.1
- 4. (A% of B + B% of A) is equal to?
Options- A. A% of B
- B. B% of A
- C. 2% of AB
- D. AB% of 3 Discuss
Correct Answer: 2% of AB
Explanation:
A% of B + B% of A =AB/100 + AB/100
= 2AB/100 = 2% of AB
- 5. If 31% of a number is 46.5,the number is?
Options- A. 150
- B. 155
- C. 160
- D. 165 Discuss
Correct Answer: 150
Explanation:
Let 31% of A = 46.5
? (31 x A)/100 = 46.5
? A = (46.5 x 100) / 31 = 150
- 6. Which number is 60% less than 80?
Options- A. 48
- B. 42
- C. 32
- D. 12 Discuss
Correct Answer: 32
Explanation:
Required number = 80 - 60% of 80
= 80 - (60 x 80)/100
= 32
- 7. If 90% of A = 30% of B and B = C% of A,then the value of C is?
Options- A. 900
- B. 800
- C. 600
- D. 300 Discuss
Correct Answer: 300
Explanation:
? 90A/100 = 30B/100 = (30/100) x AC/100
? C = 100 x (100/30) x (90/100) = 300
- 8. Which is greatest 33 1/ 3%, 4/15 and 0.35?
Options- A. 331/3%
- B. 4/15
- C. 0.35
- D. Cannot be compared Discuss
Correct Answer: 0.35
Explanation:
331/3% = (100/3) /100 = 1/3 =0.33;
4/15 = 0.26
Clearly 0.35>0.33>0.26
? 0.35 is greatest
- 9. 45 x? = 25% of 900
Options- A. 16.20
- B. 4
- C. 5
- D. 500 Discuss
Correct Answer: 5
Explanation:
Let 45 x A = (25 x 900)/100
? A = (25 x 9)/45 = 5
- 10. If 0.5% of A =85 paise, then the value of A is?
Options- A. Rs. 170
- B. Rs. 17
- C. Rs. 1.70
- D. Rs. 4.25 Discuss
Correct Answer: Rs. 170
Explanation:
? 0.5/100 of A = 85/100
? A = Rs. (85 / 0.5) = Rs. 170
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