Mathematics, 24.07.2020 07:01 talahtoo6659
The salary scale for a senior officer starts at N57000
per annum. A rise of N2800 is given at the end of each
Find the total amount of money that the officer will
year.
earn in 14 years.
Answers: 2
![S_n=\frac{n}{2}[2a+(n-1)d]$ ,where: \left\{\begin{array}{lll}$First term, a=57,000\\$Common difference, d=2,800\\$Number of terms, n=14\end{array}\right](/tpl/images/0712/3280/39aa4.png)
![S_{14}=\frac{14}{2}[2(57,000)+(14-1)(2,800)]\\=7[114,000+13*2800]\\=7[150,400]\\=1,052,800](/tpl/images/0712/3280/2acb6.png)
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The salary scale for a senior officer starts at N57000
per annum. A rise of N2800 is given at the e...
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