Quantitative Aptitude

Percentage

482 Questions
All Successive Percentage Changes 177 Population Growth and Depreciation 103 Fractional Base Multiplication 58 Reverse More-Than and Less-Than Comparisons 38 Income, Expenditure, and Savings 33 Price and Consumption 30 Election Votes and Margins 10 Fake Weight and Faulty Measures 10 Venn Diagram Percentages 9 Passing Marks Shifts 5 Fresh vs. Dry Mixture 2

Percentage Questions

Multiple choice

The following table shows the percentage of population of four states below poverty line and the proportion of males and females below and above poverty line. State Percentage of Population Below Poverty Line Proportion of Males and Females Below Poverty Line Above Poverty Line Males : Females Males : Females A 10% 2 : 3 4 : 5 B 25% 3 : 5 3 : 2 C 28% 1 : 4 5 : 3 D 38% 7 : 1 7 : 4 If the total population of State B is 7,200, then what is the number of females below poverty line in that state?

  1. 1,025

  2. 1,125

  3. 1,075

  4. 1,250
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Total population of State B is 7,200. The population below poverty line is 25% of 7,200, which is 1,800. The ratio of males to females below poverty line is 3:5, so females are 5/(3+5) = 5/8 of 1,800. 1,800 * (5/8) = 1,125.

Multiple choice

The marked price of a computer is Rs. 10,000. The selling price of the computer is Rs. 7,650. If two successive discounts of 15 percent and x percent are given, then what is the value of x?

  1. 5 percent

  2. 15 percent

  3. 10 percent

  4. 20 percent
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The selling price after the first 15% discount is 10,000 * 0.85 = 8,500. To reach 7,650, the second discount x must satisfy 8,500 * (1 - x/100) = 7,650, which simplifies to 1 - x/100 = 0.9, meaning x = 10.

Multiple choice

A vendor purchases 6 bananas for Rs. 5. When selling them, he increases the marked price by 50% and offers a 20% discount. What will be the profit percentage of selling 6 dozen bananas?

  1. 16.67%

  2. 20%

  3. 25%

  4. 12.5%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cost price of 6 bananas = Rs 5. Marked price = 5 * 1.5 = 7.5. Selling price after 20% discount = 7.5 * 0.8 = 6. Profit on 6 bananas = 6 - 5 = 1. Profit percentage = (1/5) * 100 = 20%. The quantity (6 dozen) does not change the percentage.

Multiple choice

In the elections held during August, 60% of the respondents favoured Mr. A, while the balance favoured Mr. B. It was found in September polls that 10% of Mr. A's supporters switched their preference to Mr. B, while the same percentage of Mr. B's supporters switched their preference to Mr. A. What percent of the total number of the electorate should now switch their preference from Mr. A to Mr. B so that they are on par?

  1. 6%

  2. 8%

  3. 10%

  4. 14%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Initial: A=60, B=40. After switch: A = 60 - 6 + 4 = 58, B = 40 - 4 + 6 = 42. Difference is 16. To make them equal (50 each), A must lose 8% of the total electorate.