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.
1601 06426e27c72ca731a990e28e2
6426e27c72ca731a990e28e2- 115,972true
- 212,200false
- 311,200false
- 410,200false
- Show AnswerHide Answer
- Workspace
- SingleChoice
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: A student scored 32 % marks in science subjects out of 300. How much should he score in language papers out of 200 if he is to get overall 46 % marks?
1598 05ef480bf9d32d072c24c9e51
5ef480bf9d32d072c24c9e51- 166 %false
- 260 %false
- 372 %false
- 467 %true
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "67 % "
Q: If the present population of a village is 55,566, which was 35000 2 years ago, then find the rate of increase of population per year.
1592 16343f1901bfb042f96b0286c
6343f1901bfb042f96b0286c- 124%false
- 225%false
- 323%false
- 426%true
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "26%"
Q: In an election only two candidates A and B contested 30% of the voters did not vote and 1600 votes were declared as invalid. The winner, A got 4800 votes more than his opponent thus he secured 51% votes of the total voters on the voter list. Percentage votes of the loser candidate, B out of the total voters on the voter list is:
1591 0611e121308d7b65efee71f04
611e121308d7b65efee71f04- 13true
- 25false
- 35.6false
- 46.2false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "3"
Q: The ratio of 45% of 80% of A to 30% of 40% of B is 15: 4. If the average of A and B is 67.5, what is the value of AB?
1581 06433d8a12b960e1a41a5a9d4
6433d8a12b960e1a41a5a9d4- 110false
- 218false
- 312false
- 415true
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "15"
Q: In two successive year 100 and 75 students of school appeared at the final examination. Respectively 75% and 60 % of them passed. The average rate of pass is:
1568 05ef469cd2d6fc772f50c0dbf
5ef469cd2d6fc772f50c0dbf- 1$$80{1\over2}\%$$false
- 280%false
- 3$$68{4\over7}\%$$true
- 478%false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "$$68{4\over7}\%$$"
Q: It was compulsory to get 36% marks in a paper to Rakesh to pass it. He got only 24 % marks and failed by 9 marks. Total marks of paper was-
1567 05e4625a793bdc675418b0692
5e4625a793bdc675418b0692- 166false
- 275true
- 362false
- 4100false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "75"
Q: The income of A is 25% more than that of B and the income of C is 65% less than the sum of the incomes of A and B. Income of C is what percent less than the income of A?
1565 06007edc51187ab386914b89d
6007edc51187ab386914b89d- 132false
- 237true
- 335false
- 428false
- Show AnswerHide Answer
- Workspace
- SingleChoice