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Aptitude miscellaneous
  1. In a class of 60 children 30% children can speak only English, 20% Hindi and English both and the rest of the children can speak only Hindi. How many children can speak Hindi ?








  1. View Hint View Answer Discuss in Forum

    Number of student who speak only English =30% of 60 = 18
    Number of student who speak Hindi and English =20% of 60 =12
    ∴Number of student who speak only Hindi = (60 - 30) = 30
    ∴Number of student who speak Hindi = 30 + 12 = 42

    Correct Option: A

    Number of student who speak only English =30% of 60 = 18
    Number of student who speak Hindi and English =20% of 60 =12
    ∴Number of student who speak only Hindi = (60 - 30) = 30
    ∴Number of student who speak Hindi = 30 + 12 = 42

  1. The ratio of males and females in a city is 7:8 and the percentage of children among males and females is 25% and 20% respectively.If the number of adult females in the city is 156800, what is the total population ?








  1. View Hint View Answer Discuss in Forum

    Number of females = 156800 x 100/80 = 196000
    ∴ Number of males = 7/8 x 196000 = 171500
    Total population = 196000 + 171500 = 367500

    Correct Option: B

    Number of females = 156800 x 100/80 = 196000
    ∴ Number of males = 7/8 x 196000 = 171500
    Total population = 196000 + 171500 = 367500

  1. The ratio of the number of student appearing for examination in the year 1998 in the states A, B and C was 3 : 5 : 6. Next year if the number of students in these states increase by 20%, 10% and 20% respectively, the ratio in states A and C would be 1 : 2. What was the number of students who appeared for the examination in the state A in 1999 ?








  1. View Hint View Answer Discuss in Forum

    Let the number of students appearing for examination in the year 1998 in the states A, B and C be 3N, 5N,and 6N respectively.
    According to the question, {(3N x 120)/100} / {(6N x 110)/100} = 1/2
    Its true for every N so, The data is inadequate.

    Correct Option: D

    Let the number of students appearing for examination in the year 1998 in the states A, B and C be 3N, 5N,and 6N respectively.
    According to the question, {(3N x 120)/100} / {(6N x 110)/100} = 1/2
    Its true for every N so, The data is inadequate.

  1. After spending 40% in machinery, 25% in building,15% in raw material and 5% on furniture. hari lal has a balance of Rs. 1305. The money with him was ?








  1. View Hint View Answer Discuss in Forum

    Let the Hari Lal was having R rupees in beginning.
    ∵ R - [40% of R + 25% of R + 15% of R + 5% of R] = 1305
    ⇒ R - 85% of R = 1305
    ⇒ 15% of R = 1305

    Correct Option: C

    Let the Hari Lal was having R rupees in beginning.
    ∵ R - [40% of R + 25% of R + 15% of R + 5% of R] = 1305
    ⇒ R - 85% of R = 1305
    ⇒ 15% of R = 1305
    ∴ R = (1305 x 100)/15 = 8700

  1. In mathematics exam. a student scored 30% marks in the first paper out of a total of 180. How much should he score in second paper out of a total of 150, If he is to get an overall average of at least 50% ?








  1. View Hint View Answer Discuss in Forum

    ∵ 30% of 180 + N% of 150 = 50% of (180 + 150)
    ⇒ 54 + (N x 150)/100 = 165
    ⇒ 3N/2 = 111

    Correct Option: A

    ∵ 30% of 180 + N% of 150 = 50% of (180 + 150)
    ⇒ 54 + (N x 150)/100 = 165
    ⇒ 3N/2 = 111
    ∴ N = (111 x 2) / 3 =74