FORMULA OF COMPOUND INTEREST 67 



v 



Then i.ox n = - 



i. ox = i + o.ox, 



i + o. 



0.0* = VT7- 1 . 



(XIV) 



The rate x enables the owner to compare the earning power 

 of his investment with enterprises which produce annual divi- 

 dends (Chapter VIII). 



Instead of solving the above equation, the value of x may be 

 found by inspection of Table VI. The value of i.ox n is calcu- 

 lated, and the nearest equivalent figures must be found opposite 

 n years in the table. By interpolation, x may then be found to 

 within one-tenth of i per cent. 



