SOLUTION: The salary of a clerical officer is #2300 per anum.A rise of #150 is given at the end of each year. Find the total money earned in 12 years

Algebra ->  Expressions -> SOLUTION: The salary of a clerical officer is #2300 per anum.A rise of #150 is given at the end of each year. Find the total money earned in 12 years       Log On


   

Question 1197345: The salary of a clerical officer is #2300 per anum.A rise of #150 is given at the end of each year. Find the total money earned in 12 years
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi 
The salary of a clerical officer is #2300 per anum.
A rise of #150 is given at the end of each year. 
Arithmetic sequence:
S%5Bn%5D=%28n%28a%5B1%5D%2Ba%5Bn%5D%29%29%2F2
   a%5Bn%5D=a%5B1%5D%2B%28n-1%29%2Ad
   a[12] = 2300 + 11(150) = 3950
S%5B12%5D=%2812%282300%2B3950%29%29%2F2 = #37500, the total money earned in 12 years
Using symbol given for money
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