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Quantitative Aptitude - Average Questions - 02


1. The average of 5 consecutive numbers is n. If the next two numbers are also included, the average will :


2. Five years ago, the avearge age of P and Q was 15 years. Average age of P, Q and R today is 20 years. How old will R be after 10 years ?


3. The total of the present ages of P, Q, R and S is 96 years. To find out Q's present age, which of the following informations given in statements A and B is/are sufficient ? A. The average age of P, Q and S is 20 years. B. The average age of R and S is 25 years.


4. The average age of 30 students is 9 years. If the age of their teacher is included, it becomes 10 years. The age of the teacher (in years) is :


5. The average weight of 9 mangoes increases by 20 g if one of them weighing 120 g is replaced by another. The weight of the new mango is :



6. The average age of 3 children in a family is 20 % of the average age of the father and the eldest child. The total age of the mother and the youngest child is 39 years. Ifthe father's age is 26 years, what is the age of second child ?


7. The average weight of 6 men decreases by 3 kg when one of them weighing 80 kg is repalced by a new man is :


8. The average of boys in the class is twice the number of girls in the class. If the ratio of boys and the girls in the class of 36 be 5 : 1, what is the total of the ages (in years) of the boys in the class ?


9. A team of 8 persons joins in a shooting competition. The best marksman scored 85 points. If he had scored 92 points, the average score for the team would have been 84. The number of points, the team scored, was :


10. The average age of 40 students of a class is 15 years. When 10 new students are admitted, the average is increased by 0.2 years. The average age of new students is :


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