logo

CuriousTab

CuriousTab

Discussion


Home Aptitude Average Comments

  • Question
  • The average age of two boys and their father is greater then average age of those two boys and their mother by 3 yr. The average age of the four is 19 yr. If the average age of the two boys be 5 1/ 2, then find the age of the father and mother.


  • Options
  • A. 37 yr and 28 yr
  • B. 47 yr and 38 yr
  • C. 50 yr and 41 yr
  • D. 35 yr and 32 yr

  • Correct Answer
  • 37 yr and 28 yr 

    Explanation

    Let the ages of mother, father and boys be M, F, B1 and B2, respectively.
    The total age of four member
    = 19 x 4
    = 76 yr.

    Given (B1 + B1)/2 = 11/2
    ? B1 + B2 = 11
    M + F + B1 + B2 = 76 - 11
    ? M + F = 65 .......(i)

    According to the question,
    (B1 + B2 + F) / 3 = (B1 + B2 + M) / 3 + 3
    ? B1 + B2 + F) = B1 + B2 + M + 9
    ? F = M + 9
    ? F - M = 9 ............. (ii)

    From Eqs (i) and (ii), we get
    F = 37 yr and M = 28 yr


  • Average problems


    Search Results


    • 1. 
      A cricketer whose bowling average is 12.4 runs per wicket, takes 5 wickets for 26 runs and there by decreases his average by 0.4. Find out the number of wickets taken by him till the last match?

    • Options
    • A. 75
    • B. 81
    • C. 85
    • D. 79
    • Discuss
    • 2. 
      A cricketer has a certain average for 10 inning. In the eleventh innings. he scored 216 runs, there by increasing his average by 12 runs. Find out his new average?

    • Options
    • A. 96
    • B. 84
    • C. 97
    • D. 87
    • Discuss
    • 3. 
      A car reached Raipur from Somgarh in 35 min With an average speed of 69 km/h. If the average speed is increased by 36 km/h, how much time will it take to cover the same distance?

    • Options
    • A. 24 min
    • B. 27 min
    • C. 23 min
    • D. 29 min
    • Discuss
    • 4. 
      The average runs scored by a cricketer is 42 innings, is 30. The difference between his maximum and minimum scores in an inning is 100. If these two innings are not taken into consideration, then the average score of remaining 40 inning is 28. Calculate the maximum runs scored by him in an innings?

    • Options
    • A. 125
    • B. 120
    • C. 110
    • D. 100
    • Discuss
    • 5. 
      Average weight of three boys P, T and R is 54 1/ 3 kg, while the average weight of three boys T, F and G is 53 kg. What is the average weight of P, T, R, F and G?

    • Options
    • A. 53.8 kg
    • B. 52.4 kg
    • C. 53.4 kg
    • D. Cannot be determined
    • Discuss
    • 6. 
      A has double the money of B and B has 50% more money then C. If average money of all the three persons is ? 12000, how money does A have?

    • Options
    • A. ? 211000/11
    • B. ? 315000/11
    • C. ? 216000/11
    • D. ? 316000/11
    • Discuss
    • 7. 
      A cricketer played 80 innings and scored an average of 99 runs. His score in the last inning is zero run. To have an average of 100 at the end, his score in the last innings should have been.

    • Options
    • A. 10 runs
    • B. 1 runs
    • C. 60 runs
    • D. 80 runs
    • Discuss
    • 8. 
      The arithmetical mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25%, a mean score of 31. The mean score of remaining 55% is

    • Options
    • A. 54.6%
    • B. 45%
    • C. 50'%
    • D. 51.4%
    • Discuss
    • 9. 
      The average weight of 4 men, A, B, C and D is 67 kg. The 5th man E is included and the average weight decreses by 2 kg. A is replaced by F. The weight of F is 4 kg more then E . Average weight decreases because of the replacement of A and now the average weight is 64 kg. Find the weight of A.

    • Options
    • A. 78 kg
    • B. 66 kg
    • C. 75 kg
    • D. 58 kg
    • Discuss
    • 10. 
      5 yr ago, the average age of Rashmi and Surbhi was 20 yr, Now, the average age of Rashmi, Surbhi and Meeta is 30 yr. What will be the age of Meeta after 15 yr.?

    • Options
    • A. 35 yr
    • B. 55 yr
    • C. 39 yr
    • D. 67 yr
    • Discuss


    Comments

    There are no comments.

Enter a new Comment