Average Problems Practice Question and Answer

Q: The average of 5 consecutive odd numbers A, B, C, D and E is 45. What is the product of B and D? 1018 0

  • 1
    2107
    Correct
    Wrong
  • 2
    2205
    Correct
    Wrong
  • 3
    1935
    Correct
    Wrong
  • 4
    2021
    Correct
    Wrong
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Answer : 4. "2021"
Explanation :

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Q:

The average age of 30 boys in a class is 15 years. One boy, aged 20 years, left the class, but two new boys came in his place whose age differs by 5 years. If the average age of all the boys now in the class becomes 15 years, the age of the younger newcomer is: 

1777 0

  • 1
    20 years
    Correct
    Wrong
  • 2
    15 years
    Correct
    Wrong
  • 3
    10 years
    Correct
    Wrong
  • 4
    8 years
    Correct
    Wrong
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Answer : 2. "15 years "

Q: Average height of 40 girls is 148 cm. Average of remaining number is 150 cm. What will be the average of total class if there are 50 girls in the class? 1648 0

  • 1
    148.8 cm
    Correct
    Wrong
  • 2
    149.2 cm
    Correct
    Wrong
  • 3
    148.4 cm
    Correct
    Wrong
  • 4
    144 cm
    Correct
    Wrong
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Answer : 3. "148.4 cm"
Explanation :

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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: 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? 1387 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? 1412 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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