quantitative aptitude - average questions - 02

Quantitative Aptitude - Average Questions - 02


1. 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 ?


2. 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.


3. The average weight of 29 students is 28 kg. By the admission of a new student, the average weight is reduced to 27.8 kg. The weight of the new student is :


4. The average weight of 8 men is increased by 1.5 kg when one of the men who weighs 65 kg is replaced by a new man. The weight of the new man is :


5. In a cricket eleven, the average of eleven players is 28 years. Out of these, the average ages of three groups of three players each are 25 years, 28 years and 30 years respectively. If in these groups, the captain and the youngest player are not included, and the captain is eleven years older than the youngest player, which is the age of the captai ?



6. Three years ago, the average age of A, B and C was 27 years and that of B and C, 5 years ago was 20 years. A's present age is :


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 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 :


9. The average salary per month of 30 employees in a company is Rs. 4000. If the manager's salary is added, the average salary increases to Rs. 4300, waht is the salary of the manager ?


10. 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 ?


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