138 ARITHMETIC. 



U U L E.* 



Multiply each man's stock into the tin^e of iis continu- 

 ance, tlien say, 



As the total sum cf all the products is to the wliole gain 

 or less. 



So is each man's particular product to his particular 

 share of the gain or loss. 



EXAMPLES. 



I. A and B hold a piece of ground in cojumcn, for 

 which they are to pay 36I. A put in 23 oxen for 27 days, 

 and B,2i oxen for 35 days 5 what part of the rent cu^ht: 

 each man to pay ? 



23x27=621 1356 : 36 ; : 6:?i : 



21x35=735 <^2i 



348 135^ 



* Mr. Malcolm, Mr. Ward, and several other authors, have 

 given an analytical investigation of this rule : but the most general 



aad 



