averages

Averages

Average: How to calculate Average, Average Formula, Weighted average, Mean Average, Average Questions with Solutions

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Online Aptitude Questions with Answers on Averages

Q101. **The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:**

  1.  35 years
  2.  40 years
  3.  50 years
  4.  None of these

Solution : 40 years
Q102. **The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is:**

  1.  45
  2.  50
  3.  51.4 approx.
  4.  54.6 approx.

Solution : 51.4 approx.

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Q103. **The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is:**

  1.  20
  2.  21
  3.  22
  4.  23

Solution : 21
Q104. **In an examination a pupil's average marks were 63 per paper. If he had obtained 20 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?**

  1.  8
  2.  9
  3.  10
  4.  11

Solution : 11

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Q105. **The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ration of the number of boys to the number of girls in the class is:**

  1.  1:2
  2.  2:3
  3.  3:4
  4.  3:5

Solution : 2:3
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