zZ Numerical InflruElions 



Without the Trouble of multiplying ty 9, and 

 dividing by 12, which is the Method taught in 

 moft Schools. 



But now let us fee how majiy Pounds. 



To divide by 20, is thus, (and which is common- 

 ly known) ftrike off the Cypher from the 2 thus, 

 5|o, and divide the 62 6 by 20 



Exa?nple. 

 2|o)62 5. 6 A 



The Anfwer is ^l 2s. 6d. 



In like Manner if any one Thing were to cofi: 

 3 s. 4 J. how much will 75 of the fame coft ? You 

 muft then remember, that 35. 4 J. is the ^thlE^art 

 of a Pound 5 then I refer you to the Work, Di- 

 vide 75 hj 6y thps; 



12 ■!•, or 4. 



So that the Anfwer is 1 2 Pound and 4-', or 4 of 

 a Pound, which is 10 Shillings •, and that is the 

 Anfwer, vh* 12 Pounds 10 Shillings. 



View the round about Way, and I have done. 



Firfl: reduce ^s. 4 J. into Pence, which are 40 f?. 



Multiply 75 divide 3000 by 12 J. 

 by 40 



3000 thup 12)3000 



Then by 2|o)2 5|o 



%2l. loj. theAnfw. 

 Thi§ 



