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

Mr. Mirinda saves 40 percent of his salary every month. But in April his expenses increased by 10 percent and he saved $1200 less than the amount he saves normally. What is his salary?
  1. $12000
  2. $15000
  3. $20000
  4. $30000
  5. $15500
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let salary be S. Normal savings = 0.4S. Expenses = 0.6S. New expenses = 0.6S * 1.1 = 0.66S. New savings = S - 0.66S = 0.34S. Given 0.4S - 0.34S = 1200, so 0.06S = 1200, which means S = 20000.

Multiple choice

The price of sugar has increased by 14%. By what percentage can a person decrease the consumption so that there is an increase in the expenditure by 8% only? (correct to one decimal place)

  1. 5.9%

  2. 5.3%

  3. 5.7%

  4. 5.5%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let initial price be 100 and consumption be 100. Expenditure = 10000. New price = 114. New expenditure = 10800. New consumption = 10800 / 114 = 94.736. Decrease = 100 - 94.736 = 5.26 percent, which rounds to 5.3 percent.

Multiple choice

A person saves 6% of his income. 2 years later, his income will be increased by 15% but the value of his saving remains the same. Find the hike in his expenditure (in approx. percent).

  1. a)13.65%

  2. b)12.45%

  3. c)14.85%

  4. d)15.95%

  5. e) None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let Income = 100, Saving = 6, Expenditure = 94. New Income = 115. Saving remains 6. New Expenditure = 115 - 6 = 109. Hike = (109 - 94) / 94 = 15 / 94 = 0.15957, which is approx 15.95%.

Multiple choice

There were 50 containers which had 32 boxes each. Each box had 92 balls. These balls were shifted into bigger containers which could contain bigger boxes. Each bigger container could hold 80 boxes and each box could hold 40 balls. Find the percentage decrease in the number of containers required to hold the balls.

  1. 10%

  2. 8%

  3. 6%

  4. 5%

  5. 4%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Total balls = 50 * 32 * 92 = 147,200. New containers needed = 147,200 / (80 * 40) = 147,200 / 3200 = 46. Decrease = 50 - 46 = 4. Percentage decrease = (4 / 50) * 100 = 8%.