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Question

# The average monthly salary of 20 workers in an office is ₹ 45900. If the manager's salary is added, the average salary becomes ₹ 49200 per month. Find the manager's monthly salary.

A

₹121000

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B

₹115200

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C

₹182000

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D

₹105200

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Solution

## The correct option is B ₹115200 Let the manager's salary be x Average salary of 20 workers = ₹ 45900 ⇒sum20=45900⇒sum=₹918000 When the manager's salary is added, the new sum becomes ₹(918000+x) and the new mean is ₹ 49200 918000+x21=49200918000+x=1033200x=₹115200

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