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The average monthly salary of 19 members of a group is Rs. 16000. If one more member whose monthly salary is Rs. 20000 joins the group, then the average salary of the group is
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- Rs. 18250
- Rs. 16200
- Rs. 18000
- Rs. 16250
- Rs. 18250
Correct Option: B
The average monthly salary of 19 members of a group = Rs. 16000.
A member whose monthly salary = Rs. 20000
| Required average = Rs. |  |  | |
| 20 |
| Required average = Rs. | | | |
| 20 |
| Required average = Rs. | | | |
| 20 |
Required average = Rs. 16200
Second method to solve this question ,
Difference = Rs. (20000 – 16000) = Rs. 4000
| ∴ Increase in average = | |
| 20 |
Increase in average = Rs. 200
∴ Required average = Rs. (16000 + 200) = Rs. 16200
