in january 2008, krishna salary was 6000. in each of the remaining months of that year his salary was rs 500 more than that in the previous month. find his average monthly salary that year.
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Answer:
Here as the salary is increasing in uniformly each month so the series of his series forms an AP.
Where first term,a=6000
common difference,d=500
no. of terms,n=12
so Sum of 12 terms,S12=
Step-by-step explanation:
12/2{2*6000+(12+1)500}
= 6(12000+13*500)
= 6(12000+6500)
= 6*18500
To find the average monthly salary we have to divide it by 12
{6*18500}/12
=18500/2
=9250
Hope this helps!!!
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