I N T 



TABLE II. 



tiff the Interest ofl. for any number of years not exceeding 25, at differ- 

 ent rates of Interest. 



To find tJie Interest of any sitm,for a given time, by the preceding Tables. 

 Add together the interests for the several periods corresponding with 

 the proposed rate of per cent, and that sum multiplied by the principal 

 will be the interest required. 



Interest compound. 



Let R = 1. and its interest for one year = 1 -f- r, M the amount of 

 P in TO years, then 



M = P R n 



Discount of M M -- where n must be greater than one year, 



otherwise only simple interest can be allowed. 



If besides the interest being converted into principal at\he end of every 

 year, the sum P is at the same time annually invested in capital then at 

 the end of n years. 



150 







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