Average Questions Practice Question and Answer

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Answer : 1. "500"

Q:

The average weight of five persons sitting in a boat is 38 kg. The average weight of the boat and the persons sitting in the boat is 52kg. What is the weight of the boat?

621 0

  • 1
    232 kg
    Correct
    Wrong
  • 2
    242 kg
    Correct
    Wrong
  • 3
    228 kg
    Correct
    Wrong
  • 4
    122 kg
    Correct
    Wrong
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Answer : 4. "122 kg "
Explanation :

Q:

The average age of five girls is 11. The oldest among them is 15 years old. What is the average age of the others?

619 0

  • 1
    9
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    12
    Correct
    Wrong
  • 4
    10
    Correct
    Wrong
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Answer : 4. "10"

Q:

There are 10 balls, some of them are red and the others white. The average cost of all the balls is Rs. 28, average cost of red balls Rs. 25 and that of white balls is Rs. 30, the number of white balls is: 

615 0

  • 1
    3
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    6
    Correct
    Wrong
  • 4
    7
    Correct
    Wrong
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Answer : 3. "6"

Q:

If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55 and 60, then the average marks of all the students is?

612 0

  • 1
    54.68
    Correct
    Wrong
  • 2
    53.33
    Correct
    Wrong
  • 3
    55
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 1. "54.68 "
Explanation :

Q:

The average of 8 numbers is 27. If each of the numbers is multiplied by 8, find the average of new set of numbers.

610 0

  • 1
    1128
    Correct
    Wrong
  • 2
    938
    Correct
    Wrong
  • 3
    316
    Correct
    Wrong
  • 4
    216
    Correct
    Wrong
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Answer : 4. "216"
Explanation :

Q:

The mean of 9 observations is 16. One more observation is included and the new mean becomes 17. The 10th observation is

595 0

  • 1
    9
    Correct
    Wrong
  • 2
    16
    Correct
    Wrong
  • 3
    26
    Correct
    Wrong
  • 4
    30
    Correct
    Wrong
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Answer : 3. "26 "

Q:

The average of 100 numbers is 44. The average of these 100 numbers and 4 other new numbers is 50. The average of the four new numbers will be

595 0

  • 1
    800
    Correct
    Wrong
  • 2
    200
    Correct
    Wrong
  • 3
    176
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
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Answer : 2. "200 "

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