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The average age of Rustam and Preetam is 39 years. The average age of Preetam and Geetam is 28 years. The average age of Rustam and Geetam is 34 years. What will be the age (in years) of the youngest of the three after 10 years?

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Important Questions on Average

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Quantitative Aptitude for Competitive Examinations>Chapter 12 - Average>Practice Problems Level 2>Q 19
10 years ago, the average age of a family of 4 members was 24 years. Two children having been born (with age difference of 2 years), the present average age of the family is again 24 years. Then the present age of the youngest child is:
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Quantitative Aptitude for Competitive Examinations>Chapter 12 - Average>Practice Problems Level 2>Q 20
The average age of five boys A, B, C, D and E is 8 years and the average age of B, C, E and G is 9 years. G is 11 years old. What is the average age of A and D?
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Quantitative Aptitude for Competitive Examinations>Chapter 12 - Average>Practice Problems Level 2>Q 21
The average age of 4 basket ball player is 29 years. A new player joins their group and the average age becomes 29 year 6 months. After that another player joins the team after which the average becomes 29 year 9 months. Find the average age of the two new player.
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Quantitative Aptitude for Competitive Examinations>Chapter 12 - Average>Practice Problems Level 2>Q 22

The batting average for 40 innings of a cricket player is 50 runs. His hightest score exceeds his lowest score by 172 runs. If these two innings are excluded, the average of the remaining 38 innings is 48 runs. The highest score of the players of.

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Quantitative Aptitude for Competitive Examinations>Chapter 12 - Average>Practice Problems Level 2>Q 23
A batsman played three matches in a tournament. The respective ratio between the scores of 1st and 2nd match was 5:4 and that between the scores of the 2nd and the 3rd match was 2:1. The difference between the 1st and 3rd match was 48 runs. What was the batsman’s average score in all the three matches?
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Quantitative Aptitude for Competitive Examinations>Chapter 12 - Average>Practice Problems Level 2>Q 24

In Arun’s opinion, his weight is greater than 65 kg but less than 72 kg. His brother does not agree with Arun and he thinks that Arun’s weight is greater than 60 kg but less than 70 kg. His mother's view is that his weight cannot be greater than 68 kg. If all are them are correct in their estimation, what is the average of different probable weights of Arun?

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Quantitative Aptitude for Competitive Examinations>Chapter 12 - Average>Practice Problems Level 2>Q 25
In an examination, the average of was found to be x marks. After deducting the computational error, the average marks of 120 candidates got reduced from 79 to 61. The average thus becomes (x-21.6). Find the total number of candidates.
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Quantitative Aptitude for Competitive Examinations>Chapter 12 - Average>Practice Problems Level 2>Q 26
In a class with x number of students, if one new student weighing 50 kg is added then the average weight of the class increases by 1 kg. If one more student weighing 50 kg is added, then the average weight of the class increases by 1.5 kg over the original average . What is the original average weight (in kg) of the class?