SIMPLE INTEREST BT DECIMALS. 185 



I 



SIMPLE INTEREST BY DECIMALS. 



RULE.* 



Multiply continually the principal, ratio and time, and 

 it will give the interest required. 



Ratio is the simple interest of il. for i year, at the rate 

 per cent. ?.greed on *, thus the ratio 



f 3 per cent, is '03. 



•035- 

 •04. 



•045. 



I 5 •05- 



5~ 055. 



16 '06. 



13 r 



If- 



at <|4t 



EXAMPLES. 



* The following theorems will shew all the possible cases of 

 simple interest, where /> = principal, / = time, r = ratio, aad 



a = amount. 



I. ptr^p-a, II. ^[ittzt. 



rp 



III. ^^^. IV. fZf =,, 



Z 



« 



