Percentage Practice Question and Answer

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 0

  • 1
    ₹ 6000
    Correct
    Wrong
  • 2
    ₹ 10000
    Correct
    Wrong
  • 3
    ₹ 8000
    Correct
    Wrong
  • 4
    ₹ 7500
    Correct
    Wrong
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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 0

  • 1
    Rs. 160
    Correct
    Wrong
  • 2
    Rs. 1,230
    Correct
    Wrong
  • 3
    Rs. 90
    Correct
    Wrong
  • 4
    Rs. 80
    Correct
    Wrong
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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 0

  • 1
    32.7 Percent
    Correct
    Wrong
  • 2
    29.5 Percent
    Correct
    Wrong
  • 3
    43.6 Percent
    Correct
    Wrong
  • 4
    36.6 Percent
    Correct
    Wrong
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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 0

  • 1
    36
    Correct
    Wrong
  • 2
    42
    Correct
    Wrong
  • 3
    30
    Correct
    Wrong
  • 4
    48
    Correct
    Wrong
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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 0

  • 1
    6
    Correct
    Wrong
  • 2
    8
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    4
    Correct
    Wrong
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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 0

  • 1
    ₹76
    Correct
    Wrong
  • 2
    ₹ 61
    Correct
    Wrong
  • 3
    ₹95
    Correct
    Wrong
  • 4
    ₹80
    Correct
    Wrong
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Answer : 4. "₹80"

Q:

25% of 120 + 40% of 380 = ? of 637

1707 0

  • 1
    $${4\over7}$$
    Correct
    Wrong
  • 2
    $${2\over7}$$
    Correct
    Wrong
  • 3
    $${3\over7}$$
    Correct
    Wrong
  • 4
    $${1\over7}$$
    Correct
    Wrong
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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 0

  • 1
    15,972
    Correct
    Wrong
  • 2
    12,200
    Correct
    Wrong
  • 3
    11,200
    Correct
    Wrong
  • 4
    10,200
    Correct
    Wrong
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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.


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