Quiz Discussion

The average of 6 observations is 45.5. If one new observation is added to the previous observations, then the new average becomes 47. The new observation is :

Course Name: Quantitative Aptitude

  • 1] 58
  • 2] 56
  • 3] 50
  • 4] 46
Solution
No Solution Present Yet

Top 5 Similar Quiz - Based On AI&ML

Quiz Recommendation System API Link - https://fresherbell-quiz-api.herokuapp.com/fresherbell_quiz_api

# Quiz
1
Discuss

The average weight of a class of 24 students is 35 kg. If the weight of the teacher be included, the average rises by 400 g. The weight of the teacher is -

  • 1] 45 kg
  • 2] 50 kg
  • 3] 53 kg
  • 4] 55 kg
Solution
2
Discuss

The average monthly salary of 660 workers in a factory is Rs. 380. The average monthly salary of officers is Rs. 2100 and the average monthly salary of the other workers is Rs. 340. Find the number of other workers.

 

  • 1] 645
  • 2] 650
  • 3] 640
  • 4] 642
Solution
3
Discuss

The average wages of a worker during a fortnight comprising 15 consecutive working days was Rs. 90 per day. During the first 7 days, his average wages was Rs. 87/day and the average wages during the last 7 days was Rs. 92/day. What was his wage on the 8th day?

  • 1] 93
  • 2] 90
  • 3] 92
  • 4] 97
Solution
4
Discuss

In a set of three numbers, the average of first two numbers is 2, the average of the last two numbers is 3, and the average of the first and the last numbers is 4. What is the average of three numbers?

  • 1] 2
  • 2] 2.5
  • 3] 3
  • 4] 3.5
Solution
5
Discuss

David obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, mathematics, physics, chemistry and biology. What are his average marks?

  • 1] 65
  • 2] 69
  • 3] 75
  • 4] None of these
Solution
6
Discuss

The mean of 100 items was 46. Later on it was discovered that an item 16 was misread as 61 and another item 43 was misread as 34. It was also found that the number of item was 90 and not 100. Then what is the correct mean ?

  • 1] 50
  • 2] 50.7
  • 3] 52
  • 4] 52.7
Solution
7
Discuss

The average of two numbers is XY. If one number is X, the other is-

  • 1]

    Y/2

  • 2]

    Y

  • 3]

    2XY - X

  • 4]

    X (Y - 1)

Solution
8
Discuss

A cricketer has a certain average for 9 innings, In the tenth inning he scores 100 runs there by increasing his average by 8 runs. His new average is 

  • 1]

    28 runs

  • 2]

    24 runs

  • 3]

    32 runs

  • 4]

    20 runs

Solution
9
Discuss

The average of six numbers is x and the average of three of these is y. If the average of the remaining three is z, then-

  • 1] x = y + z
  • 2] 2x = y + z
  • 3] x = 2y + 2z
  • 4] None of these
Solution
10
Discuss

The average of 11 players of a cricket team is decreased by 2 months when two of them aged 17 years and 20 years are replaced by two new players. The average age of the new players is-

  • 1] 17 years 1 month
  • 2] 17 years 7 months
  • 3] 17 years 11 months
  • 4] 18 years 3 months
Solution
# Quiz