Percentage


  1. A man spends 7
    1
    % of his money
    2
    and after spending 75% of the remaining he had Rs. 370 left. How much money did he have?









  1. View Hint View Answer Discuss in Forum

    Initial amount with the person = Rs. x (let)

    After an expense of
    15
    %
    2

    Remaining amount
    =100 -
    15
    % of x.
    2

    =
    200 - 15
    % of x
    2

    =
    50
    =
    10
    = 22
    1
    %
    1533

    After an expense of 75% of it,
    Remaining amount =
    37x
    = Rs.
    37x
    40 × 4160

    According to the question,
    37x
    = 370 ⇒ 37x = 370 × 160
    160

    ⇒ x =
    370 × 160
    = Rs. 1600
    37

    Correct Option: B

    Initial amount with the person = Rs. x (let)

    After an expense of
    15
    %
    2

    Remaining amount
    =100 -
    15
    % of x.
    2

    =
    200 - 15
    % of x
    2

    =
    50
    =
    10
    = 22
    1
    %
    1533

    After an expense of 75% of it,
    Remaining amount =
    37x
    = Rs.
    37x
    40 × 4160

    According to the question,
    37x
    = 370 ⇒ 37x = 370 × 160
    160

    ⇒ x =
    370 × 160
    = Rs. 1600
    37


  1. A businessman imported Laptops, worth Rs. 210000, Mobile phones worth Rs. 100000 and Television sets worth Rs. 150000. He had to pay 10% duty on laptops, 8% on Phones and 5% on Television sets as a special case. How much total duty (in Rupees) he had to pay on all items as per above details?









  1. View Hint View Answer Discuss in Forum

    Duty payment

    Laptop ⇒ Rs.
    210000 × 10
    = Rs. 21000
    100

    Mobile phone
    ⇒ Rs.
    100000 × 8
    = Rs. 8000
    100

    Television set
    ⇒ Rs.
    150000 × 5
    = Rs. 7500
    100

    Total Duty Payment
    = Rs. (21000 + 8000 + 7500)
    = Rs. 36500

    Correct Option: A

    Duty payment

    Laptop ⇒ Rs.
    210000 × 10
    = Rs. 21000
    100

    Mobile phone
    ⇒ Rs.
    100000 × 8
    = Rs. 8000
    100

    Television set
    ⇒ Rs.
    150000 × 5
    = Rs. 7500
    100

    Total Duty Payment
    = Rs. (21000 + 8000 + 7500)
    = Rs. 36500



  1. A line of length 1.5 metres was measured as 1.55 metres by mistake. What will be the value of error per cent ?









  1. View Hint View Answer Discuss in Forum

    Error = (1.55 – 1.5) metre = 0.55 metre

    ∴ Error per cent =
    0.05
    × 100
    1.5

    =
    50
    =
    10
    = 22
    1
    %
    1533

    Correct Option: C

    Error = (1.55 – 1.5) metre = 0.55 metre

    ∴ Error per cent =
    0.05
    × 100
    1.5

    =
    50
    =
    10
    = 22
    1
    %
    1533


  1. In a motor of 120 machine parts, 5% parts were defective. In another motor of 80 machine parts, 10% parts were defective. For the two motors considered together, the percentage of defective machine parts was









  1. View Hint View Answer Discuss in Forum

    Defective parts of 120 machine parts

    =
    120 × 5
    = 6
    100

    Defective parts of 80 machine parts
    =
    80 × 10
    = 8
    100

    Total defective parts
    = 6 + 8 = 14
    ∴ Required percent
    =
    20
    × 100 = 7%
    200

    Correct Option: A

    Defective parts of 120 machine parts

    =
    120 × 5
    = 6
    100

    Defective parts of 80 machine parts
    =
    80 × 10
    = 8
    100

    Total defective parts
    = 6 + 8 = 14
    ∴ Required percent
    =
    20
    × 100 = 7%
    200



  1. In the last financial year, a car company sold 41,800 cars. In this year, the target is to sell 51,300 cars. By what per cent must the sale be increased ?









  1. View Hint View Answer Discuss in Forum

    Percentage increase in sales

    =
    51300 - 41800
    × 100
    41800

    =
    9500
    =
    250
    = 22
    8
    %
    4181111

    Correct Option: D

    Percentage increase in sales

    =
    51300 - 41800
    × 100
    41800

    =
    9500
    =
    250
    = 22
    8
    %
    4181111