Percentage


  1. B got 20% marks less than A. What percent marks did A got more than B ?









  1. View Hint View Answer Discuss in Forum

    Given that , A = 20%
    We find the required percentage with the help of given formula ,

    Required percentage =
    A
    × 100%
    100 - A

    Correct Option: B

    Given that , A = 20%
    We find the required percentage with the help of given formula ,

    Required percentage =
    A
    × 100%
    100 - A

    Required percentage =
    20
    × 100 = 25%
    100 - 20


  1. If A’s height is 10% more than B’s height, by how much percent less is B’s height than that of A ?









  1. View Hint View Answer Discuss in Forum

    As we know that If the first value is r % more than the second value, then second value

    is
    r
    × 100% less than the first value.
    100 + r

    Here r = 10%.
    ∴ Required percentage =
    10
    × 100 =
    100
    11011

    Correct Option: D

    As we know that If the first value is r % more than the second value, then second value

    is
    r
    × 100% less than the first value.
    100 + r

    Here r = 10%.
    ∴ Required percentage =
    10
    × 100 =
    100
    11011

    ∴ Required percentage = 9
    1
    %
    11



  1. If p is 10% more than q, then by what percent is q less than p ?









  1. View Hint View Answer Discuss in Forum

    Here , A = 10%
    We know that ,

    Required percent decrease =
    A
    × 100
    100 + A

    Required percent decrease =
    10
    × 100
    100 + 10

    Correct Option: A

    Here , A = 10%
    We know that ,

    Required percent decrease =
    A
    × 100
    100 + A

    Required percent decrease =
    10
    × 100
    100 + 10

    Required percent decrease =
    10
    × 100 = 9
    1
    11011


  1. If p is less than q by 25% then q exceed p by









  1. View Hint View Answer Discuss in Forum

    Let q be 100.
    ∴ p = 75

    ∴ Required percentage =
    25 × 100
    =
    100
    753

    = 33
    1
    %
    3

    Second method to solve this question,
    Here , A = 25%
    Required percentage =
    A
    × 100%
    (100 - A)

    Correct Option: A

    Let q be 100.
    ∴ p = 75

    ∴ Required percentage =
    25 × 100
    =
    100
    753

    = 33
    1
    %
    3

    Second method to solve this question,
    Here , A = 25%
    Required percentage =
    A
    × 100%
    (100 - A)

    Required percentage =
    25
    × 100%
    (100 - 25)

    Required percentage =
    25
    × 100%
    75

    Required percentage = 33
    1
    %
    3




  1. A boy found the answer for the question “subtract the sum of
    1
      and 
    1
    45
    from unity and express the answer in decimals” as 0.45. The percentage of error in his answer was









  1. View Hint View Answer Discuss in Forum

    According to question ,

    Correct answer = 1 –
    1
    +
    1
    45

    Correct answer = 1 –
    5 + 4
    20

    Correct answer = 1 –
    9
    =
    11
    2020

    Incorrect answer = 0.45 =
    45
    100

    Incorrect answer =
    9
    20

    Error =
    11
    -
    9
    2020

    Error =
    2
    =
    1
    2010

    Correct Option: D

    According to question ,

    Correct answer = 1 –
    1
    +
    1
    45

    Correct answer = 1 –
    5 + 4
    20

    Correct answer = 1 –
    9
    =
    11
    2020

    Incorrect answer = 0.45 =
    45
    100

    Incorrect answer =
    9
    20

    Error =
    11
    -
    9
    2020

    Error =
    2
    =
    1
    2010

    Percentage error =
    1
    × 100
    10
    11
    20

    Percentage error =
    1
    ×
    20
    × 100
    1011

    Percentage error =
    200
    %
    11