• 640

  • 690

  • 420

  • 570


The total salary amount = 15 ├Ч 600 = 9000 The salary of the exiting manager = 720 Therefore, the salary of 12 workers and the remaining 2 managers, = 9000 тИТ 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 ├Ч 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

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The average of 11 observation is 60. if the average of first five observations is 58 and that of last five is 56, the sixth observation is?

The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest?

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