Here is solved questions of problems on Average [quantitative aptitude] for SBI PO and IBPS exams. Problems on finding average related questions are asked in almost all entrance examinations and
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### Average [Quantitative Aptitude] Model Test Paper - 1

### Maximum Marks: 10 / Duration: 10 Mins

**Q.1. The average of first 9 prime numbers is:**

A) 9

B) 11

C) 11 1/9

D) 11 2/9

E) None of these

B) 11

C) 11 1/9

D) 11 2/9

E) None of these

**Explanation (Show/Hide)**

**Q.2. The average of five consecutive odd numbers is 61. What is the difference between highest and lowest numbers?**

A) 2

B) 5

C) 8

D) Cannot be determined

E) None of these

B) 5

C) 8

D) Cannot be determined

E) None of these

**Explanation (Show/Hide)**

**Q.3. The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is:**

A) 25

B) 27

C) 30

D) 35

E) None of these

B) 27

C) 30

D) 35

E) None of these

**Explanation (Show/Hide)**

**Q.4. The average of six numbers is 395. The average of two of them is 340, while the average of other two is 385. What is the average of the remaining two numbers?**

A) 450

B) 460

C) 470

D) 480

E) None of these

B) 460

C) 470

D) 480

E) None of these

**Explanation (Show/Hide)**

**Q.5. The average age of 36 students in a group is 14 years. When teacher's age is included to it, the average increases by one. What is the teacher's age in years?**

A) 31 years

B) 36 years

C) 51 years

D) Cannot be determined

E) None of these

B) 36 years

C) 51 years

D) Cannot be determined

E) None of these

**Explanation (Show/Hide)**

**Q.6. The average of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected average is:**

A) 35.2

B) 36.1

C) 36.5

D) 39.1

E) None of these

B) 36.1

C) 36.5

D) 39.1

E) None of these

**Q.7. 3 years age, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is**

A) 1 years

B) 1 1/2 years

C) 2 years

D) 3 years

E) None of these

B) 1 1/2 years

C) 2 years

D) 3 years

E) None of these

**Explanation (Show/Hide)**

**Q.8. A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, thereby increasing his average by 6 runs. His new average is :**

A) 48 runs

B) 52 runs

C) 55 runs

D) 60 runs

E) None of these

B) 52 runs

C) 55 runs

D) 60 runs

E) None of these

**Explanation (Show/Hide)**

**Q.9. The average monthly salary of 20 employees in an organization is Rs. 1500. If the manager's salary is added, then the average salary increases by Rs. 100. What is the manager's monthly salary?**

A) Rs. 2000

B) Rs. 2400

C) Rs. 3600

D) Rs. 4800

E) None of these

B) Rs. 2400

C) Rs. 3600

D) Rs. 4800

E) None of these

**Explanation (Show/Hide)**

**Q.10. Of the four numbers, whose average is 60, the first is one - fourth of the sum of the last three. The first number is:**

A) 15

B) 45

C) 48

D) 60

E) None of these

B) 45

C) 48

D) 60

E) None of these

**Explanation (Show/Hide)**

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