Average Problems Practice Question and Answer

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? 1121 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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Q: The average of three numbers is 154. The first number is double of the second number and the second is double of the third one. The first number is 3044 0

  • 1
    264
    Correct
    Wrong
  • 2
    132
    Correct
    Wrong
  • 3
    88
    Correct
    Wrong
  • 4
    66
    Correct
    Wrong
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Answer : 1. "264"
Explanation :

let x y and z is three number
x:y
2:1
y:z
2:1
then we can find x:y:z is will be 4:2:1
Then 7/3=154
1=66
then the x will be=66*4=264

Q: The average of marks obtained by 14 students was 71, but it was found later that one of the student’s mark was accounted as 42 instead of 56 and for the other student; it was accounted as 74 instead of 32. So, the find the actual average? 1163 0

  • 1
    67
    Correct
    Wrong
  • 2
    68
    Correct
    Wrong
  • 3
    69
    Correct
    Wrong
  • 4
    71
    Correct
    Wrong
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Answer : 3. "69"
Explanation :

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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? 1258 0

  • 1
    75.7
    Correct
    Wrong
  • 2
    75.8
    Correct
    Wrong
  • 3
    75.9
    Correct
    Wrong
  • 4
    75.6
    Correct
    Wrong
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Answer : 3. "75.9"
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? 1338 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- 1383 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 average of nine consecutive odd numbers is 53. The least odd number is: 

1924 0

  • 1
    22
    Correct
    Wrong
  • 2
    27
    Correct
    Wrong
  • 3
    35
    Correct
    Wrong
  • 4
    45
    Correct
    Wrong
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Answer : 4. "45 "

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