Average Practice Question and Answer

Q: Average age of 12 men is 56 years. Two members of 60 years and 52 years die. What will the average age of the remaining members? 1583 0

  • 1
    54 years
    Correct
    Wrong
  • 2
    55 years
    Correct
    Wrong
  • 3
    56 years
    Correct
    Wrong
  • 4
    58 years
    Correct
    Wrong
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Answer : 3. "56 years "
Explanation :

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Q: The average of goods produced by a company every month is 4000 of average of last 3 month’s production. How many average goods should they produce every month in next 9 months so their monthly average production during a year will be 4375? 1579 1

  • 1
    4500
    Correct
    Wrong
  • 2
    4600
    Correct
    Wrong
  • 3
    4680
    Correct
    Wrong
  • 4
    4710
    Correct
    Wrong
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Answer : 1. "4500"
Explanation :

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Q: The average salary of all employees working in an office is Rs.8000. The average salary of 7 technicians is Rs 12000 and the average salary of rest of the workers is Rs.6000. The total no. of workers working in that office is- 1576 0

  • 1
    20
    Correct
    Wrong
  • 2
    21
    Correct
    Wrong
  • 3
    23
    Correct
    Wrong
  • 4
    22
    Correct
    Wrong
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Answer : 2. "21"
Explanation :

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Q:

The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The  observation is

1575 0

  • 1
    20
    Correct
    Wrong
  • 2
    24
    Correct
    Wrong
  • 3
    26
    Correct
    Wrong
  • 4
    28
    Correct
    Wrong
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Answer : 3. "26 "

Q:

The average weight of 29 students is 40 kg. If the weight of teacher be included the average weight increased by 400 gms. The weight of the teacher is-

1574 0

  • 1
    50 kg
    Correct
    Wrong
  • 2
    49 kg
    Correct
    Wrong
  • 3
    52 kg
    Correct
    Wrong
  • 4
    55 kg
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
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Answer : 3. "52 kg "

Q:

Find mean of first five prime number.

1567 1

  • 1
    4.5
    Correct
    Wrong
  • 2
    3.6
    Correct
    Wrong
  • 3
    5.4
    Correct
    Wrong
  • 4
    5.6
    Correct
    Wrong
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Answer : 4. " 5.6"

Q:

The average age of 24 boys and their teacher is 15 years. When the teacher's age is excluded, the average age decreases by 1 year. The age of the teacher is: 

1561 0

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

Q: The average value found for 20 observations was 75. It was noticed later that 97 was read as 79. So, what was the correct average value? 1555 0

  • 1
    75.7
    Correct
    Wrong
  • 2
    75.8
    Correct
    Wrong
  • 3
    75.9
    Correct
    Wrong
  • 4
    75.6
    Correct
    Wrong
  • Show Answer
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Answer : 3. "75.9"
Explanation :

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