Aptitude Questions on Percentages

  1. For a candidate to clear an examination, he/she must score 55% marks. If he/she gets 120 and fails by 78 marks, the total marks for the examination is:
    A. 300
    B. 320
    C. 360
    D. 400
  2. C. 360
    Here the mark obtained by the candidate is 120 and the candidate fails by 78 marks
    Therefore the passing marks is (120+78) = 198
    Let the total marks be x. Then,
    => 55/100 * x = 198
    => x = 360
  3. A property decreases in value every year at the rate of 6 1/4% of its value at the beginning of the year. It's value at the end of 3 years was Rs. 21,093. Find its value at the beginning of the 1st year?
    A. Rs. 18,060.36
    B. Rs. 18,600
    C. Rs. 25,600.24
    D. Rs. 32,000.50
  4. C. Rs. 25,600.24
    6 1/4% = 1/16
    x * 15/16 * 15/16 * 15/16 = 21093
    x = 25600.24
  5. 80 is what percent of 64?
    A. 75%
    B. 85%
    C. 120%
    D. 125%
  6. D. 125%
    Let x percent of 64 be 80
    64 * x/100 = 80 => x = (80 * 100)/64 => x = 125
    Hence, 80 is 125% of 64
  7. How much is 80% of 40 is greater than 4/5 of 25?
    A. 4
    B. 6
    C. 9
    D. 12
  8. D. 12
    (80/100) * 40 – (4/5) * 25
    32 - 20 = 12
  9. 40% of a number is more than 20% of 650 by 190. Find the number?
    A. 600
    B. 700
    C. 800
    D. 900
  10. C. 800
    (40/100) * X – (20/100) * 650 = 190
    2/5 X = 320
    X = 800
  11. 40 is subtracted from 60% of a number, the result is 50. Find the number?
    A. 110
    B. 130
    C. 140
    D. 150
  12. D. 150
    (60/100) * X – 40 = 50
    6X = 900
    X = 150
  13. If A got 80 marks and B got 60 marks, then what percent of A's mark is B's mark?
    A. 60%
    B. 65%
    C. 75%
    D. 80%
  14. C. 75%
    A's marks = 80; B's marks = 60.
    Let x% of A = B => x/100 * 80 = 60
    => x = (60 * 100)/80 = 75
    B's marks is 75% of A's marks
  15. A and B’s salaries together amount to Rs. 2,000. A spends 95% of his salary and B spends 85% of his. If now their savings are the same, what is A’s salary?
    A. Rs.500
    B. Rs.750
    C. Rs.1250
    D. Rs.1500
  16. D. Rs.1500
    (5/100) A = (15/100) B
    A = 3B
    A + B = 2000
    4B = 2000 => B = 500
    A = 1500
  17. 5% people of a village in Sri Lanka died by bombardment, 15% of the remainder left the village on account of fear. If now the population is reduced to 3553, how much was it in the beginning?
    A. 3800
    B. 4200
    C. 4400
    D. 5500
  18. C. 4400
    X * (95/100) * (85/100) = 3553
    X = 4400
  19. In a factory, there are 40% technicians and 60% non-technicians. If the 60% of the technicians and 40% of non-technicians are permanent employees, then the percentage of workers who are temporary is?
    A. 32%
    B. 42%
    C. 52%
    D. 62%
  20. C. 52%
    Total = 100
    T = 40, NT = 60
    40*(60/100) = 24, 60*(40/100) = 24
    24 + 24 = 48 => 100 - 48 = 52%