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CAPF Test 216
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CAPF Test 216

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  • Question 1/5
    1 / -0
    The population of a town is 10000. Of these, 55% are males. 30% of the males are illiterate. In total, 52% population is literate. Find the percentage of females, who are illiterate.
    Solutions

    Given,

    Population of the town = 10000

    No. of males = 10000 × 55% = 5500

    No. of females = 10000 – 5500 = 4500

    No. of illiterate males = 5500 × 30% = 1650

    No. of persons illiterate in total population = 10000 × 48% = 4800

    No. of illiterate females = 4800 – 1650 = 3150

    Required percentage =

  • Question 2/5
    1 / -0
    Arya multiplied a number by  instead of 15. What is the percentage error in the calculation?
    Solutions

    Let the number be 15.

    Correct calculation = 15 × 15 = 225

    Wrong calculation =

    Error = 225 – 3 = 222

  • Question 3/5
    1 / -0
    Ankit invested a certain sum at certain interest rate for 1 year. If he had invested at the rate of 5% more, then he would have got Rs. 1250 more. What is the amount for investment?
    Solutions

    Let the investment be x and rate of interest be r

    So after one year earning = x(1 + r)

    Now, if R = r + 0.05

    Then, earning = x(1 + r + 0.05)

    According to the question the difference in earnings is Rs. 1250

    Therefore, x(1 + r + 0.05) - x(1 + r) = 1250

    ⇒ 0.05x = 1250

    ⇒ x = Rs. 25000

  • Question 4/5
    1 / -0
    A profit of 30% is made on goods when a discount of 10% is given. What profit percentage will be made when a discount of 20% is given on marked price.
    Solutions
    Let marked price be 100

    The discounted prize be 90

    profit = 30%

    original  price =  90/1.3 = 69.23

    After discount of 20%

    Discounted prize = 80

    Profit = 80-69.23 =  10.76

    Profit % = = (10.76 / 69.23)*100 = 15.54 % 

  • Question 5/5
    1 / -0
    An error of 2% in excess is made while measuring the radius of circle. The percentage of error in the calculated area of the circle is?
    Solutions
    Let the radius of circle be 100 cm

    Area of circle==  =

    Errror radius= 102cm

    Error area =

    Difference= error area – correct area

    =

    Percentage error =

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