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Mean of salary 50 employees is 20000. If one more employee joined this group then mean salary become 21000 .Find salary of new person joined the group.

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Then, Total wages = Rs 20000 x 50 = Rs 10,00,000

If mean of then 51 employee's salary = Rs 21,000

Then, Total wages = Rs 21000 x 51 = Rs 10,71,000

The salary of the new person joined the group is Rs (10,00,000-10,71,000) = Rs 71,000 (Answer).

Please mark it brainiest answer........................

Mean = Sum of observations/Number of observations

20000 = x/50

x = 50 × 20000 = 1,000,000

Now, if one employee is added,

Mean = 21000

21000 = y/51

y = 51 × 21000 = 1,071,000

Now, here y = x + salary of the new employee

1,071,000 = 1,000,000 + Salary of new employee

Salary of new employee = 1,071,000 - 1,000,000

= 71,000