Percentage Practice Question and Answer
8 Q: Ram spends 40 % of his salary on food, 20% on house rent, 10% on entertainment and 10% on conveyance. If his savings at the end of a month are ₹ 1500, then his salary per month (in ₹) is:
1755 05f2e51dabe9f31290fbceedf
5f2e51dabe9f31290fbceedf- 1₹ 6000false
- 2₹ 10000false
- 3₹ 8000false
- 4₹ 7500true
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Answer : 4. "₹ 7500 "
Q: A person has some amount with him. 25% of it is stolen in a bus, 10% is lost through a hole in the pocket, 50% of remainder is spent on food. He then purchases a book worth Rs. 26 from the remainder. He walks back home because all his money is over. What was the initial amount?
1750 060545b3dee4cc54f0b58463a
60545b3dee4cc54f0b58463a- 1Rs. 160false
- 2Rs. 1,230false
- 3Rs. 90false
- 4Rs. 80true
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Answer : 4. "Rs. 80"
Q: The expenditure on the cost of living of a man and his family is 60% of his salary. He gets two increments of 30% and 60% in his salary. If his saving increases by 250% of his initial saving, then the new cost of living expenditure is what percentage (rounded off to the nearest integer) of the increased salary?
1749 064872639b50f5316a455b20b
64872639b50f5316a455b20b- 132.7 Percenttrue
- 229.5 Percentfalse
- 343.6 Percentfalse
- 436.6 Percentfalse
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Answer : 1. "32.7 Percent"
Q: 78 is divided into two parts in such a way that the ratio of quadruple of the first part and five times the second part is 14: 15. The first part is
1742 05f1e6fb23b87486bfc5383ba
5f1e6fb23b87486bfc5383ba- 136false
- 242true
- 330false
- 448false
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Answer : 2. "42"
Q: Due to a 25% increase in the price of rice per kg. a person is able to purchase 20 kg. less for Rs.400. What is the increased price of rice per kg.?
1738 060376f859792c13b2858af01
60376f859792c13b2858af01- 16false
- 28false
- 35true
- 44false
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Answer : 3. "5"
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:
1723 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
1707 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.
1704 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.

