Percentage


  1. If x% of a is the same as y% of b, then z% of b will be









  1. View Hint View Answer Discuss in Forum

    Given , x% of a = y% of b

    ax
    =
    by
    100100

    ⇒ b =
    ax
    y

    ∴ z% of b =
    ax
    ×
    z
    y100

    Correct Option: B

    Given , x% of a = y% of b

    ax
    =
    by
    100100

    ⇒ b =
    ax
    y

    ∴ z% of b =
    ax
    ×
    z
    y100

    Required answer =
    xz
    % of a
    y


  1. If 20% of (A + B) = 50% of B, then value of
    A - B
    is
    A + B









  1. View Hint View Answer Discuss in Forum

    (A + B) ×
    20
    = B ×
    50
    100100

    A + B
    =
    B
    52

    ⇒ 2A + 2B = 5B
    ⇒ 2A = 3B
    2A
    = 3 ⇒ 2A = 3B
    B

    =2
    A
    - 1
    2A - B
    B
    2A + B
    2
    A
    + 1
    B

    Required answer =
    3 - 1
    3 + 1

    Correct Option: A

    (A + B) ×
    20
    = B ×
    50
    100100

    A + B
    =
    B
    52

    ⇒ 2A + 2B = 5B
    ⇒ 2A = 3B
    2A
    = 3 ⇒ 2A = 3B
    B

    =2
    A
    - 1
    2A - B
    B
    2A + B
    2
    A
    + 1
    B

    Required answer =
    3 - 1
    3 + 1

    Required answer =
    2
    =
    1
    42

    Or
    3B - B
    =
    2B
    3B + B4B



  1. If 120% of a is equal to 80% of b, then
    b + a
    is equal to
    b - a









  1. View Hint View Answer Discuss in Forum

    As per the given question ,

    a ×
    120
    = b ×
    80
    100100

    b
    =
    120
    =
    3
    b802

    =
    b
    + 1
    b + a
    a
    b - a
    b
    - 1
    a

    Required answer =
    3
    + 1
    2
    3
    - 1
    2

    Correct Option: A

    As per the given question ,

    a ×
    120
    = b ×
    80
    100100

    b
    =
    120
    =
    3
    b802

    =
    b
    + 1
    b + a
    a
    b - a
    b
    - 1
    a

    Required answer =
    3
    + 1
    2
    3
    - 1
    2

    Required answer =
    5
    = 5
    2
    1
    2


  1. One-third of 1206 is what percent of 134 ?









  1. View Hint View Answer Discuss in Forum

    Here ,
    1
      of 1206
    3

    = 1206 ×
    1
    = 402
    3

    Correct Option: D

    Here ,
    1
      of 1206
    3

    = 1206 ×
    1
    = 402
    3

    ∴ Required percent =
    402
    × 100 = 300%
    134



  1. What percent of 3.5 kg is 70 gms ?









  1. View Hint View Answer Discuss in Forum

    According to question ,

    Required percentage =
    70
    × 100
    3.5 × 1000

    Correct Option: D

    According to question ,

    Required percentage =
    70
    × 100 = 2%
    3.5 × 1000