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Question

The average monthly salary of 20 employees in an organization is Rs. 1500. If the manager's salary is added then the average salary increases by Rs. 100.. What is the manager's monthly salary?

A
Rs. 2000
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B
Rs. 2400
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C
Rs. 3600
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D
Rs. 4800
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Solution

The correct option is C Rs. 3600
Given that, average salary of 20 employees is Rs. 1500

Therefore, 1500=sum of 20 employees salary20

sum of 20 employees salary=1500×20=30000 ------(1)

Given that if the manager salary is added, the average increases by 100

Therefore, 1500+100=sum of 20 employees salary + manager salary20+1

1600=30000+manager salary21 (from (1))

30000+manager salary=33600

manager salary=3360030000=3600

Therefore, the salary of the manager is Rs. 3600

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