Percentage Aptitude Questions Practice Question and Answer
8 Q: A man had a certain amount with him. He spent 20% of that to buy an article and 5% of the remaining on transport. Then he gifted ₹ 120. If he is left with ₹ 1,400, the amount he spent on transport is:
1724 05dca4ca422d2e72bd78b4528
5dca4ca422d2e72bd78b4528- 1₹76false
- 2₹ 61false
- 3₹95false
- 4₹80true
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Answer : 4. "₹80"
Q: 25% of 120 + 40% of 380 = ? of 637
1710 05ef5568bbf1dc404b135a6ab
5ef5568bbf1dc404b135a6ab- 1$${4\over7}$$false
- 2$${2\over7}$$true
- 3$${3\over7}$$false
- 4$${1\over7}$$false
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Answer : 2. "$${2\over7}$$"
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.
1708 06426e27c72ca731a990e28e2
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: 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?
1684 05ef480bf9d32d072c24c9e51
5ef480bf9d32d072c24c9e51- 166 %false
- 260 %false
- 372 %false
- 467 %true
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Answer : 4. "67 % "
Q: The average mathematics marks of two section A and B of class IX in the annual examination is 74. The average marks of Section A is 77.5 and that of Section B is 70. The ratio of number of student of section A and B is:
1679 05f15453d4cff381d16260554
5f15453d4cff381d16260554- 17 : 8false
- 28 : 5false
- 38 : 7true
- 47 : 5false
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Answer : 3. "8 : 7"
Q: In a class, the average score of girls in an examination is 73 and that of boys is 71. The average score for the whole class is 71.8. Find the percentage of girls.
1676 05dd62f0ca1c5834595c3d7e9
5dd62f0ca1c5834595c3d7e9- 140 %true
- 250 %false
- 355 %false
- 460 %false
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Answer : 1. "40 % "
Q: The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?
1672 05f97f8f4d8201a50c268b81b
5f97f8f4d8201a50c268b81b- 18 : 9false
- 221 : 22true
- 317 : 18false
- 424 : 9false
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Answer : 2. "21 : 22"
Q: A man spends 80% of his income. His income is increased by 20% and he increase his expenditure by 10%. His saving are increased by:
1667 05f80161e4e4f797ddbd7e57f
5f80161e4e4f797ddbd7e57f- 130 %false
- 220 %false
- 332 %false
- 460 %true
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