Average Problems Practice Question and Answer

Q: The average of marks obtained by 120 candidates in an examination is 35. The average of marks obtained by passed candidates is 39 and that of for failed candidates is 15. What is the no. of passed candidates? 1203 0

  • 1
    100
    Correct
    Wrong
  • 2
    120
    Correct
    Wrong
  • 3
    150
    Correct
    Wrong
  • 4
    140
    Correct
    Wrong
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Answer : 1. "100"
Explanation :

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Q: Average age of a couple before 4 years, at the time of their marriage was 27 years. Now, the average age of the couple including their new born baby is 21 years. Find the present age of the baby? 1133 0

  • 1
    4 years
    Correct
    Wrong
  • 2
    3 years
    Correct
    Wrong
  • 3
    2 years
    Correct
    Wrong
  • 4
    1 years
    Correct
    Wrong
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Answer : 4. "1 years"

Q: Average age of 21 men reduces by 1 year when a man of 32 years is replaced by a child. What is the age of that child? 1235 0

  • 1
    10 years
    Correct
    Wrong
  • 2
    11 years
    Correct
    Wrong
  • 3
    9 years
    Correct
    Wrong
  • 4
    8 years
    Correct
    Wrong
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Answer : 2. "11 years"
Explanation :

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Q: The average of first three numbers is three times of the fourth number. If the average of all four numbers is 5, then find the fourth number. 1075 0

  • 1
    4.5
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    2
    Correct
    Wrong
  • 4
    4
    Correct
    Wrong
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Answer : 4. "4"
Explanation :

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Q: The average of 11 results is 50. If the average of first six results is 49 and and that of last six is 53, find the sixth result? 1384 0

  • 1
    56
    Correct
    Wrong
  • 2
    62
    Correct
    Wrong
  • 3
    50
    Correct
    Wrong
  • 4
    58
    Correct
    Wrong
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Answer : 2. "62"
Explanation :

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Q: Average runs of a player in 20 innings is 40.5. His lowest score was 5 and highest was 103. What is the average of remaining inning? 2285 0

  • 1
    36
    Correct
    Wrong
  • 2
    38
    Correct
    Wrong
  • 3
    39
    Correct
    Wrong
  • 4
    41
    Correct
    Wrong
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Answer : 3. "39"

Q: Average weight of 10 men increases by 3.5 kg when a man of 50 kg is replaced by a new man what is the age of new person? 1409 0

  • 1
    85 kg
    Correct
    Wrong
  • 2
    84 kg
    Correct
    Wrong
  • 3
    82 kg
    Correct
    Wrong
  • 4
    80 kg
    Correct
    Wrong
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Answer : 1. "85 kg"
Explanation :

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Q: The average of three numbers is 40. First of them is two times of the seconds and the second is three time of the third. So, what is the difference between the largest and smallest number? 1097 0

  • 1
    30
    Correct
    Wrong
  • 2
    36
    Correct
    Wrong
  • 3
    46
    Correct
    Wrong
  • 4
    60
    Correct
    Wrong
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Answer : 4. "60"
Explanation :

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