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The average monthly salary of 12 workers and 3 managers in a factory was Rs. 600. When one of the manager whose salary was Rs. 720, was replaced with a new manager, then the average salary of the team went down to 580. What is the salary of the new manager?
- A. 640
- B. 690
- C. 420
- D. 570
Answer: Option C
Here is complete explanation of The average monthly salary of 12 workers and 3 managers in….
Solution(By ExamCraze Team)
The total salary amount = 15 × 600 = 9000
The salary of the exiting manager = 720
Therefore, the salary of 12 workers and the remaining 2 managers,
= 9000 − 720 = 8280
When a new manager joins, the new average salary drops to Rs. 580 for the total team of 15 of them
The total salary for the 15 people i.e., 12 workers, 2 old managers and 1 new manager =580 × 15 = 8700
Therefore, the salary of the new manager is, 9000 - 8700 = 300 less than that of the old manager who left the company, which is equal to 720 - 300 = 420
The average salary dropped by Rs. 20 for 15 of them.
Therefore, the overall salary has dropped by 15 × 20=300
Therefore, the new manager's salary should be Rs. 300 less than that of the old manager, = 720 - 300