Quiz No:3899 Arithmetic Aptitude Average Questions IBPS Clerks ,SSC ,NDA ,CDS ,RRB, LIC ,SBI POs Exams

Arithmetic Aptitude Average Questions for IBPS Clerks,SBIPOs,CSAT,SSC,RRB Exams




1. The average of first 80 natural number is

 
 
 
 

2. The average of 12, 22, 32, 42, 52, 62,72 ,is

 
 
 
 

3. The average of all odd number up to 200 is

 
 
 
 

4. The average age of two persons is 32 years. One is elder by the other by 16 years. The ages of the two person are

 
 
 
 

5. The average age of a class of 50 boys is 12.9 years. It is raised to 13.0 years by coming of a new boy. The age of new boy is

 
 
 
 

6. The average age of the students of a class is 15. Five students of average age 12 joined the class and the average age of the whole class is reduced to 14. The original strength of the class was

 
 
 
 

7. The average monthly salary of 10 workers of a company is Rs 1445. One more member whose monthly salary is Rs 1500 has joined the group. The average monthly salary of 11 workers is

 
 
 
 

8. In a coconut grove, (x + 2) trees yield 60 nuts per year, x trees yield 120 nuts per year & (x – 2) trees yield 180 nuts per year. If the average yield per year per tree be 100. The value of x is

 
 
 
 

9. The average of 50 numbers is 38. If two numbers, namely 45 & 55 are discarded, the average of the remaining number is.

 
 
 
 

10. The average age of group of persons going for picnic is 16 years. Twenty new persons with an average age of 15 years join the group on the spot due to which their average becomes 15.5 years. Find the number of persons initially going for picnic.

 
 
 
 

11. The average of 23 numbers is 34. If the average of first 12 number is 32 and that of the last 12 number is 38. The 12th number is

 
 
 
 

12. The average marks of a student in ten papers are 80. If the highest and the lowest scores are not considered, the average is 81. If the highest score is 92, find the lowest.

 
 
 
 

13. The average weight of 3 men, A, B & C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E, whose weight is 3 kg more than that of D, replaces A, then the average weight of B, C, D and E becomes 79 kg. What is the weight of A?

 
 
 
 

14. The average of a batsman for 40 innings is 50 runs. His highest score exceeds his lowest score by 172 runs. If these two inning are excluded, his average drops by 2 runs. Find his highest score.

 
 
 
 

15. Three maths classes: X, Y and Z take an algebra test. The average score in class X is 83.
The average score in class Y is 76.
The average score in class Z is 85.
The average score of all students in classes X & Y together is 79.
The average score of all students in classes Y & Z together is 81.
What is the average for all the three classes?

 
 
 
 

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

 
 
 
 

17. The average age of boys in the class is twice the number of girls in the class. If the ratio of boys & girls in the class of 36 be 5:1, the total age of boys in class will be

 
 
 
 

18. The average number of students in class I to V is 29. If the average number of students in class I, III & V is 30, then the total number of students in II & IV classes is