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Home Aptitude Decimal Fraction Comments

  • Question
  • 1/8th part of a pencil is black, half of the remaining is white. If the remaining part is blue and length of this blue part is 3 1/ 2cm, then find the length of the pencil?


  • Options
  • A. 6 cm
  • B. 7 cm
  • C. 8 cm
  • D. 9 cm

  • Correct Answer
  • 8 cm 

    Explanation

    Let the total length of pencil = L cm
    Then, black part = L/8
    ? Remaining part = L - L/8 = 7L/ 8
    and White part = (7L/8)/2 = 7L/8
    ? Remaining part = L - (L/8 + 7L/16) = 7L/16
    ? length of blue part = 7L/16

    According to the question,
    7L/16 = 31/2
    ? 7L/16 = 7/2
    ? L =8


  • Decimal Fraction problems


    Search Results


    • 1. 
      How many pieces of 13.2 cm can be cut from a 330 cm long rod?

    • Options
    • A. 25
    • B. 28
    • C. 21
    • D. 35
    • Discuss
    • 2. 
      Find the value of 27 x 1. 2 x 5.526 2 x 0. 6 .

    • Options
    • A. 121.57
    • B. 121.75
    • C. 121.75
    • D. None of these
    • Discuss
    • 3. 
      A lamppost is divided into three parts, the first part is (1/3)rd of the whole length, second (3/8)th of the first and the third is 6 m 50 cm. The length of the lamppost is?

    • Options
    • A. 15 m
    • B. 10 m
    • C. 12 m
    • D. 131/2
    • Discuss
    • 4. 
      If a fraction is multiplied by itself and then divided by the reciprocal of the same fraction, the result is 18 26/ 27. find the fraction?

    • Options
    • A. 8/27
    • B. 11/3
    • C. 22/3
    • D. 32/3
    • Discuss
    • 5. 
      A man spends (1/7)th of his salary on food, half of the remaining on clothing and (1/3)rd of the remaining on entertainment. He is still left with Rs. 600. How much does he spend on entertainment?

    • Options
    • A. Rs. 600
    • B. Rs. 450
    • C. Rs. 300
    • D. Rs. 700
    • Discuss
    • 6. 
      In a polling booth, total number of voters is 1575 out of which 0.4 part are male voters. If a candidate gets 0.4 part of female votes, then find how many votes did the candidate get?

    • Options
    • A. 945
    • B. 756
    • C. 378
    • D. 630
    • Discuss
    • 7. 
      In a village, (5/8)th of the population are adults,half of the adults are male,(4/5)th of adult females are illiterate. if 400 females are illiterate, then the population of the village is?

    • Options
    • A. 2000
    • B. 1500
    • C. 1800
    • D. 1600
    • Discuss
    • 8. 
      (1/4)th of number of boys and (3/8)th of number of girls participated in annual sport days in the school. What fractional part of total number of students participated?

    • Options
    • A. 32%
    • B. 20%
    • C. 36%
    • D. data inadequate
    • Discuss
    • 9. 
      A scooter before overhauling requires 2/3 h service time every 45 days,while after overhauling it requires 2/3 h service time every 60 days. what fraction of pre-overhauling service time is saved in the latter case?

    • Options
    • A. 4/3
    • B. 1/3
    • C. 3/4
    • D. 1/4
    • Discuss
    • 10. 
      From a rope 30 m long, a person cuts off as many pieces as possible, each 3 1/ 4 m long. What fraction of the whole will be left?

    • Options
    • A. 1/40
    • B. 3/4
    • C. 8/13
    • D. 7/13
    • Discuss


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