The welspring of sciences, which teacheth the perfecte worke and practise of arithmeticke both in vvhole numbers & fractions, with such easie and compendious instruction into the saide art, as hath not heretofore been by any set out nor laboured, : Beautified vvith most necessary rules and questions, not onely profitable for marchauntes, but also for all artificers, as in the table doth plainely appere..

¶The. vij. Chapter treateth of marchaundise solde by waight.

AT 9.d. ½ the ounce, what is y^e li. waight worth? Answere, say if 3/2 giue 9. ½ what will 16/1 giue multiply and diuide, & you shal finde 12.s. 8.d. so much is the yarde worth?

Or otherwise, by the rules of prac∣tise for syxe pence, take the ½ of 16. which is 8.s. then for 3.d. take the ¼ of 16.s. which is 4.s. Finally, for the halpenye, take 16. ob. which are 8.d. adde all these numbers togither and you shall finde 12.s. 8.d. as before.

More, at 10 d. ½ the ounce, what are 112. li. waight worth after the rate? Aunswere: reduce. 112. li. into oūces, in multiplying. 112. li. by 16. ounces & you shall haue 1792. ounces, thē say by the rule of 3. if

1/1

10 ½

1792/1

: Mul∣tiplie and diuide, and you shall finde 18816 d. which do make 78. li. 8 s. and so much are the 112. li. worth after 10.d ¼ the ounce.

At 12.s. 8d. the li. waight, what is the ounce worth? Answere: put 12.s. 8d. into pence, and you shall haue 152. pence: then say by the rule of 3. if 16. ounces cost 152d. what shall 1. ounce coste, multiplie and diuide, and you shall finde 9.d. ½, so much is the oūce worth.

Or otherwise, take the ¼ of 12 s. 8.d for 4 ounces, and thereof commeth 3.s. 2.d. then for one ounce, take the ¼ of 3.s. 2d. and you shall haue 9.d. ½ as before.

At 32. li. 10.s. the quintall, that is to

saye, the 100. li. waight: what is 1. li. waight worthe after the same rate? Aunswere, Put 32. li. 10.s. all into shil∣lings and you shall haue 650.s.

Then say, by the rule of three, if

100

650

1.

multiply and diuide, and you shal finde, 6.s. 6.d. so much is the li. worthe.

If one pound waight of saffron do cost me 18.s. 8.d. what shal 355. li. 10. oū¦ces cost me by y^e. same price? Aunswere saye by the rule of 3. if

1/1

18 ⅔

355 ⅝

. Multiply and diuide, & you shal finde 331. li. 18.s. 4.d. so much are the 355. li. ten ounces worth.

Briefe rules of vvaight.

WHo that multiplieth the pence that 1. li. waight is worth by 5. and diuideth y^e product therof by. 12. hee shal finde how many poūds in money the quintall is worth, that is to say, how much the 100. li. waight is worth.

And contrariwise he that multipli∣eth

the pounds of money that the 100. waight is worth by 12. and deuideth the product by 5. shall fynde how ma∣ny pence the poūde waight is worth.

¶Example.

AT seuentene pence the pounde waight, what is the 100. pounde waight worth? Aunswere, Multiplye 17. by 5. and thereof cōmeth 85. diuide the same by 12. and you shall finde 7. pound 1/12, which 1/12 is worth one shil∣ling and eight pence. So much is the 100. pounde waight worth.

More, at 13. li. the 100. li. waight, what is one pounde waight worthe? Aunswere, Multiplie 13. by 12. amoun∣teth to 156. the which diuide by 5. and you shal finde 31.d. ⅕ which is 2.s. 7.d. ⅕ and so much is one pounde waight worth.

The lyke is to be done of yardes, elles, or of any other measure, when we recken but fyue score to the hun∣dred.

Briefe Rules for measure.

Who that multiplieth the pence that one ell is worth, by 6. And diui∣deth the product by 12. hee shall fynde how many poundes in money y^e 120. elles are worth, which 120. elles wee count but for a C.

And contrariwise, hee that multi∣plieth the poundes in money that the 120. elles are worth by 12. and diuideth the multiplication by 6. shall fynde howe many pence the ell is worthe.

¶Example.

At ten pence the ell, what are 120. elles worth? Answere, Multiplie 10.d. by 6. and thereof commeth 60: The which diuide by 12. and you shall find fyue pounde, so many pounds in mo∣ney are 120. ells worth at 10.d. the ell.

More, at 9. pounde, the 120. elles, what is one ell worthe? Aunswere, Multiplie nine pound by twelue, and therof commeth 108. the which diuide by 6. and you shall finde 18.d. so much is one ell worth.

The like is to be done of all ma∣ner

of wares, which are sold after 120. for the hundred.

¶Briefe Rules for our hundreth waight here at London, which is after 112. li. for the C.

WHo that multiplieth y^e pence that one pounde waight is worthe by 28. and diuideth the product by 60. shall finde how many pounds in mo∣ney the 112. li. waight is worth.

ANd contrariwise, hee that multi∣plieth the poundes in money that 112. li. is worth by 60. and diuideth the product by 28. shall finde how many pence one li. waight is worth.

¶Example.

AT nine pence the pound waight, what is the 112. li. waight worth? Aunswere: multiplie 9.d. by 28, and thereof cōmeth 252, the which diuide by 60. & you shall finde 4. li. 12/60 which being abbreuiated is 1/5 of a pounde, which is worthe 4.s. And thus the 112. li. is worth 4. pound 4. shil.

At 8. li. y^e 112. li. waight, what is 1. li. waight worth? Answere, Multiplie 8. li. by 60. and thereof commeth 480, y^e which diuide by 28. & you shall finde 17.d. 1/7: so much is 1. li. waight worth.