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- Question
- What should come in place of the question marks(?), so that it satisfies equality of the given equation?
32% of 750 =?
Options- A. 23% of 600
- B. 46% of 207
- C. 98% of 250
- D. 75% of 320
- Correct Answer
- 75% of 320
Explanation32% of 750 = 750 x (32/100) = 240
From option (a), 23% of 600
= 600 x 23/100 = 138
From option (b), 46 % of 207
= 207 x 46/100 = 95.22
From option (c), 98% of 250
= 250 x 98/100 = 245
From option (d), 75% of 320
= 320 x 75/100 = 240
Hence, from option (d), satisfies equality of the equation. - 1. Aryan got 350 marks and Vidya scored 76% marks in the same test. If Vidaya scored 296 marks more than Aryan, then what were the maximum marks of the test?
Options- A. 650
- B. 900
- C. 850
- D. 950 Discuss
- 2. Last year, there were 610 boys in a school. The number decreased by 20% this year. How many girl are there in the school, if the number of boys in the school this year?
Options- A. 854
- B. 848
- C. 798
- D. 782 Discuss
- 3. In a particular constituency, 75% of voters cast their votes, out of which 2% were rejected. The winning candidate received 75% of the valid votes and bagged a total of 9261 votes. The total number of voters in the constituency is
Options- A. 14500
- B. 18900
- C. 16800
- D. 24000 Discuss
- 4. from 2008 to 2009, the sales of a book decreased by 80%. If the sales in 2010 was the same as in 2008, by what per cent did it increase from 2009 to 2010?
Options- A. 80%
- B. 100%
- C. 120%
- D. 400% Discuss
- 5. The price of two article are as 3 : 4. If the price of the first article is increased by 10% and that if the second by ? 4 one original ratio remains the same. The original price of the second article is
Options- A. ? 40
- B. ? 10
- C. ? 30
- D. ? 35 Discuss
- 6. In a class X of 30 students, 24 passed in first class; in another class Y of 35 students, 28 passed in first class. In which class was the percentage of students first class more?
Options- A. Class X has more percentage of students getting first class
- B. Class Y has more percentage of students getting first class
- C. Both classes have equal percentage of students getting first class
- D. None of the above Discuss
- 7. Veena spends 25% of her monthly income on household expenses. Her annual income is ? 4.32 lakh. What is the total amount that Veena spends on household expenses in 8 months together?
Options- A. ? 74000
- B. ? 71000
- C. ? 73000
- D. ? 72000 Discuss
- 8. The salary of an employee of a company increase every month by 4%. If his salary in August was ? 6300, then what would be his approximate salary in month of October of the same year?
Options- A. ? 6552
- B. ? 6967
- C. ? 6814
- D. ? 6627 Discuss
- 9. 1 L of water is added to 5 L of alcohol and water solution containing 40% alcohol strength. The strength of alcohol in the new solution will be?
Options- A. 30%
- B. 331/3%
- C. 332/3%
- D. 33% Discuss
- 10. In an examination, 49% students failed in English, 36% students failed in Hindi, While 15% failed in both. if total number of passed students in 450, then how many students did appear in the examination?
Options- A. 1800
- B. 2000
- C. 1100
- D. 1500 Discuss
Percentage problems
Search Results
Correct Answer: 850
Explanation:
Let maximum marks of the exam is N.
According to the question,
Marks obtained by Vidaya = Marks obtained by Aryan + 296
? N x (76/100) = 350 + 296
? N x (76/100) = 646
? N = (646 x 100)/7
? N = 8.5 x 100 = 850
? N = 850
Correct Answer: 854
Explanation:
Last year number of boys in school = 610
? Number of boys in school this year = 610 - (610 x 20)/100
= 610 - 122 = 488
? Number of girls in school this year
= Number of boys in school this year x 175%
= (488 x 175)/100
= (488 x 7)/4
= 122 x 7
= 854
Hence, number of girls in school this year in 854.
Correct Answer: 16800
Explanation:
Let the total number of votes = N
According to the question,
75% of 98% of 75% of N = 9261
[? 2% votes were rejected]
? (N x 75 x 98 x 75) / (100 x 100 x 100) = 9261
? N = (9261 x 100 x 100 x 100) / (75 x 75 x 98) = 16800
Correct Answer: 400%
Explanation:
Let sale in 2008 = 100
Sale in 2009 = 20
Sale in 2010 = 100
? Required increases = [(100 - 20)/20] x100
= (80/20) x 100 = 400%
Correct Answer: ? 40
Explanation:
Let cost prices of two article be 3N and 4N respectively then
(110% of 3N) / (4N + 4) = 3/4
? 1.1N / (N + 1) = 1
? 1.1N = N + 1
? 0.1 N = 1
? N = 10
Thus, cost price of the second article is 4 x 10 = ? 40
Correct Answer: Both classes have equal percentage of students getting first class
Explanation:
For class X, let the students passed in first class = a%
Then, by condition given in question
a% of 30 = 24
? (a x 30) /100 = 24
? a = 80%
Now, for class Y let the student passed in first class = b%
Then, according to the question,
b% of 35 = 28
? (b x 35)/100 = 28
? b = (28 x 100)/35 = 80%
Hence, both classes have equal percentage of student getting first class.
Correct Answer: ? 72000
Explanation:
Annual household expenses
= ? (25% of 4.32 x 105)
= ? (25/100) x 4.32 x 105
= ? ( 25 x 4.32 x 103)
? Household expenses for 8 months
= ? [(25 x 4.32)/(12 x 8)] x 103)
= ? 72000
Correct Answer: ? 6814
Explanation:
Required salary in October
= 6300 x (104/100) x (104/100)
= 63 x 104 x 1.04
= ? 6814.08
? ? 6814
Correct Answer: 331/3%
Explanation:
Quantity of alcohol in 5 L of solution = (40/100) x 5 = 2 L
Quantity of alcohol in 6 L of solution = 2 L
? Strength of alcohol in new solution = (2/6) x 100%
= 331/3%
Correct Answer: 1500
Explanation:
According to the formula .
Percentage of students passed in both the subjects
= [100 - (x + y - z)]%
= [100 - (49 + 36 - 15)]% = 30%
Let total number of students = N
According to the question,
(N x 30)/100 = 450
? N = (450/30) x 100 = 1500
? Total number of students = 1500
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