## Average

#### Average

1. The average of 8, 9, 12, 13, 15, 9 is
1. 11
2. 6
3. 16
4. 18

1. Average = (8 + 9 + 12 + 13 + 15 + 9)/6

##### Correct Option: A

Average = (8 + 9 + 12 + 13 + 15 + 9)/6
= 66 / 6
= 11

1. A has 8 pencils, B has 10 pencils and C has 15 pencils, then the average number of pencils with them are
1. 8
2. 10
3. 15
4. lies between 9 and 15

1. Average number of pencils
= ( 8 + 10 + 15 ) / 3

##### Correct Option: D

Average number of pencils
= ( 8 + 10 + 15 ) / 3
=11

1. The average age of 7 member of Patel's family is 25 year. The average age of the same family 3 year ago was
1. 21 year
2. 22 year
3. 25 year
4. none of these

1. 3 year ago average of family = Present average age of family -3

##### Correct Option: B

Present average age of family
= 25 year
3 year ago average of family
= 25 - 3 = 22 years

1. The average of 6 number 13, 17, 25, 11, 26, 10 is
1. 20
2. 17
3. 15
4. 25

1. Average = sum of 6 numbers / 6

##### Correct Option: B

Average = sum of 6 numbers / 6
= ( 13 + 17 + 25 + 11 + 26 + 10 ) / 6
= 102 / 6
= 17

1. The salary of A, B, C, D, E is Rs. 8000, Rs. 5000, Rs. 11000, Rs. 7000, Rs. 9000 per month respectively, then the average salary of A, B, C, D, and E per month is
1. Rs. 7000
2. Rs. 8000
3. Rs. 8500
4. Rs. 9000

1. Average salary
= 8000 + 5000 + 11000 + 7000 + 9000 / 5

##### Correct Option: B

Average salary
= 8000 + 5000 + 11000 + 7000 + 9000 / 5
= Rs. 8000