• ( 1 ) 39.897% of 4331 + 58.779% of 5003 = ?

    • 1) 4300
    • 2) 4500
    • 3) 4700
    • 4) 4900
    • Discussion in forum
      Answer : 3) 4700
      Solution : 39.897% of 4331 + 58.779% of 5003 = ?
      ? = (40/100) * 4330 + (59/100) * 5000
      ? = 1732 + 2950
      ? = 4700 (appr.)








      discussion


      Answer : 3) 4700

    • ( 2 ) A printer numbers the pages of a book starting with 1 and uses 3189 digits in all. How many pages does the book have?

    • 1) 1080
    • 2) 1075
    • 3) 1074
    • 4) 1000
    • Discussion in forum
      Answer : 3) 1074
      Solution : No. of digits in 1-digit page nos. = 1 * 9 = 9.
      No. of digits in 2-digit page nos. = 2 * 90 = 180.
      No. of digits in 3-digit page nos. = 3 * 900 = 2700.
      No. of digits in 4-digit page nos. = 3189 - (9 + 180 + 2700)
      = 3189 - 2889
      = 300.
      Number of pages with 4-digit page nos. = 300/4
      = 75.
      Hence total number of pages = (999 + 75) = 1074.








      discussion


      Answer : 3) 1074

    • ( 3 ) The total monthly salary of 4 men and 2 women is Rs. 46,000. If a woman earns Rs. 500 more than a man, what is the monthly salary of a woman?

    • 1) 7500
    • 2) 6500
    • 3) 8000
    • 4) 9000
    • Discussion in forum
      Answer : 3) 8000
      Solution : Let the monthly salary of a man be Rs. 'x'.
      Then, monthly salary of a woman = Rs. (x + 500).
      So, 4x + 2(x + 500) = 46000.
      => 6x + 1000 = 46000
      => 6x = 45000
      => x = 7500.
      Monthly salary of a woman = Rs. (x + 500) = Rs. 8000.








      discussion


      Answer : 3) 8000

    • ( 4 ) If x = 1 - q and y = 2q + 1, then for what value of q, x is equal to y ?

    • 1) 0
    • 2) 1
    • 3) -1
    • 4) -2
    • Discussion in forum
      Answer : 1) 0
      Solution : x = y
      => 1 - q = 2q + 1
      => 3q = 0
      => q = 0.








      discussion


      Answer : 1) 0

    • ( 5 ) Income of a company doubles after every one year. If the initial income was Rs. 4 lakhs, what would be the income after 5 years?

    • 1) Rs. 2.52 crores
    • 2) Rs. 2.56 crores
    • 3) Rs. 1.28 crores
    • 4) Rs. 1.24 crores
    • Discussion in forum
      Answer : 3) Rs. 1.28 crores
      Solution : Income after 1 year = Rs. (4 * 21) lakhs.
      Income after 2 years = Rs. (4 * 2 * 2) = Rs. (4 * 22) lakhs.
      So, the income after 5 years = Rs. (4 * 25) lakhs
      = Rs. 128 lakhs
      = Rs. 1.28 crores.








      discussion


      Answer : 3) Rs. 1.28 crores

    • ( 6 ) If 2x + 3y = 31, y - z = 4 and x + 2z = 11, then what is the value of x + y + z?

    • 1) 16
    • 2) 15
    • 3) 13
    • 4) 12
    • Discussion in forum
      Answer : 2) 15
      Solution : 2x + 3y = 31-----eq.(1)
      y - z = 4------eq.(2)
      x + 2z = 11-----eq.(3)
      multiplying eq.(3) by 2, we get 2x + 4z = 22 ------eq.(4)
      Subtracting eq.(4) from eq.(1), we get 3y - 4z = 9 ------ eq.(5)
      By solving eq.(5) and eq.(2), we get y = 7 and z = 3.
      Putting y = 7 in eq.(1), we get x = 5.
      Now x + y + z = 5 + 7 + 3 = 15.








      discussion


      Answer : 2) 15

    • ( 7 ) By how much is three-fifth of 350 greater than four-seventh of 210 ?

    • 1) 90
    • 2) 100
    • 3) 110
    • 4) 120
    • Discussion in forum
      Answer : 1) 90
      Solution : 3/5 of 350 - 4/7 of 210 = 210 - 120 = 90.








      discussion


      Answer : 1) 90

    • ( 8 ) On simplification 3034 - (1002 ÷ 20.04) is equal to

    • 1) 2543
    • 2) 2984
    • 3) 2993
    • 4) 3029
    • Discussion in forum
      Answer : 2) 2984
      Solution : Given exp. = 3034 - ( 1002 / 2004 * 100)
      = 3034 - 50
      = 2984.








      discussion


      Answer : 2) 2984

    • ( 9 ) If a * b = a2+2b, what is the value of 'p' if 4 * (3 * p) = 50 ?

    • 1) 8
    • 2) 12.5
    • 3) 4
    • 4) 7
    • Discussion in forum
      Answer : 3) 4
      Solution : 3 * p = 32 + 2p = 9 + 2p.
      4 * (3 * p) = 50
      => 42 + 2(9 + 2p) = 50
      => 16 + 18 + 4p = 50
      => 34 + 4p = 50
      => 4p = 50 - 34
      => 4p = 16
      => p = 4.








      discussion


      Answer : 3) 4

    • ( 10 ) If a * b = 2a - 3b + ab, then 3 * 5 + 5 * 3 is equal to:

    • 1) 22
    • 2) 26
    • 3) 28
    • 4) 24
    • Discussion in forum
      Answer : 1) 22
      Solution : 3 * 5 = (2 * 3 - 3 * 5 + 3 * 5) = (6 - 15 + 15) = 6.
      5 * 3 = (2 * 5 - 3 * 3 + 5 * 3) = (10 - 9 + 15) = 16.
      So, 3 * 5 + 5 * 3 = 6 + 16 = 22.








      discussion


      Answer : 1) 22





Top