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The average salary of a person for the months of February, March, April, and May is Rs. 12,000, and that for the month's March, April, May June is Rs. 13,000. If his salary for the month of June is Rs. 8,000, then what is his salary for the month of February?

The average salary of a person for the months of February, March, April, and May is Rs. 12,000, and that for the month's March, April, May June is Rs. 13,000. If his salary for the month of June is Rs. 8,000, then what is his salary for the month of February? Correct Answer Rs, 4,000

Given:

The average salary of a person for the months of February, March, April, and May is Rs. 12,000

The month's March, April, May June is Rs. 13,000

The month of June is Rs. 8,000

Formula used:

Average = sum of observation/number of observation

Calculation:

The average salary of a person for the months of February, March, April, and May = 12000

February + March + April +  May = (12000) × 4

February + March + April + May = 48000      ----(1)

Sum of the month March, April, May and June = (13000) × 4

March + April + May + June = 52000      ----(2)

Subtract from equation (1) and equation (2):-

February – June = - 4000

⇒ June salary = 8000        

⇒ February = - 4000 + 8000

February = 4000

∴His salary for the month of February is 4000.

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