Percentage Aptitude Questions Practice Question and Answer
8 Q: If the population of a town is 12.000 and the population increases at the rate of 10% per annum, then find the population. after 3 years.
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6426e27c72ca731a990e28e2- 115,972true
- 212,200false
- 311,200false
- 410,200false
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Answer : 1. "15,972"
Explanation :
To find the population after 3 years given that it increases at a rate of 10% per annum, you can use the formula for exponential growth:
𝑃=𝑃0×(1+𝑟)𝑛P=P0×(1+r)n
Where:
- 𝑃P = Population after 𝑛n years
- 𝑃0P0 = Initial population
- 𝑟r = Rate of increase (in decimal form)
- 𝑛n = Number of years
Given:
- 𝑃0=12,000P0=12,000 (Initial population)
- 𝑟=0.10r=0.10 (10% increase per annum)
- 𝑛=3n=3 (Number of years)
Substitute these values into the formula:
𝑃=12,000×(1+0.10)3P=12,000×(1+0.10)3
𝑃=12,000×(1.10)3P=12,000×(1.10)3
𝑃=12,000×(1.331)P=12,000×(1.331)
𝑃=15,972P=15,972
So, the population after 3 years would be approximately 15,972.
Q: The price of an article is reduced by 25% but the daily sale of the article is increased by 30%. The net effect on the daily sale receipts is
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60b60f03adafcb4fbcf36df5- 1false
- 2true
- 32 % increasefalse
- 42 % decreasefalse
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Answer : 2. "
Q: If the purchase price of an article is equal to 80 percent of its selling price then there will be profit.
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5f75a5b0f66ef56de84ea529- 120%false
- 2false
- 324 %false
- 425 %true
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Answer : 4. "25 %"
Q: If the length of a rectangle is increased by 20% and its breadth is decreased by 20%, its area:
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5fed9a2b6ce9586a0ff932f4- 1Increases by 4%false
- 2Decreases by 4%true
- 3Decreases by 1%false
- 4Does not changefalse
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Answer : 2. "Decreases by 4%"
Q: In an exam, 3 marks are scored on the correct solution, but 2 marks are deducted on the wrong solution. If a student scores 75 questions and gets 75 marks, the correct answer is the number of questions.
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602cc7fda6ca4d5b0bb3d76f- 150false
- 235true
- 330false
- 425false
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Answer : 2. "35"
Q: In an examination in which full marks were 700, A gets 20 % more than B, B gets 20 % more than C, and Cgets 15 % less than D. If A got 576 marks, then what percentage of full marks did D get?
756 0631f3242671e1904db7217c5
631f3242671e1904db7217c5- 167.22 %true
- 268.22 %false
- 365,22 %false
- 466.22 %false
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Answer : 1. "67.22 % "
Q: The number obtained by subtracting two-third of 75% of 600 from a number is 320, what is the original number?
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631090be7c72c07784688297- 1500false
- 2300false
- 3620true
- 4720false
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Answer : 3. "620"
Q: If the total monthly income of 16 persons is ₹ 80,800 and the income of one of them is 120% of the average income, then his income is
740 063a98b87e590d4085fc68c79
63a98b87e590d4085fc68c79- 1₹ 5,050false
- 2₹ 6,060true
- 3₹ 6,160false
- 4₹ 6,600false
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