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" How much gold of 15, of 17, and of 22 carats fine, must be mixed with 5 oz. of 18 carats fine, so that the composition may be 20 carats fine ? Ans. "
An Elementary Treatise on Arithmetic: Taken Principally from the Arithmetic ... - Σελίδα 123
των Silvestre François Lacroix - 1825 - 144 σελίδες
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Mathematics: Compiled from the Best Authors and Intended to be the ..., Τόμος 1

Samuel Webber - 1801
...to make the composition worth 8s. per Ib ? Ans. 2olb. at 45. 10 at 6s. 10 at los. and %o at ias. 3. How much gold of 15, of 17 and of 22 carats fine, must be mixed with 502. of 18 carats fine, so that the Composition may be 20 carats fine ? Ans. 502. of 15 carats fine,...

A Complete Treatise on Arithmetic, Rational and Practical: Wherein the ...

Paul Deighan - 1804
...the limited €rnple is only once linked, which will not always give true an wen; be lays !• If 15. How much gold of 15, of 17, and of 22 carats fine, tnuft be mixed with 5 ounces of 18 carats fine, that the competition may be 20 carats fine ? Anf. 5...

A Course of Mathematics ...: Designed for the Use of the Officers ..., Τόμος 2

Isaac Dalby - 1806
...5, we get the 5 following answers, which are all the question admits of in whole numbers. x= S 19. How much gold of 15, of 17, and of 22 carats fine, must be mixed with 5 oz. of 18 carats fine, so that the composition may be 20 carats fine ? If x, y, and z, are the respective...

A New System of Mercantile Arithmetic: Adapted to the Commerce of the United ...

Michael Walsh - 1807 - 274 σελίδες
...and 20 Ib. at 12«. 11. How much gold of 15, ef 17, and of 22 carats fine, must be mixed with 5 oz. of 18 carats fine, so that the composition may be 20 carats fine ? Ans. 5 oz. of 15 carats fine, 5 oz. of 17, and 25 of 22. POSITION. POSITION is a rule, which, by false or...

Mathematics, Τόμος 1

Samuel Webber - 1808
...make the composition worth 8s. per. Ib, ? Ans. 20lb. at 4s. 10 at 6s. 10 at 10s. and 20 at 12s. 3. How much gold of 15, of 17, and of 22 carats fine, * In the very same manner questions may be wrought, when several of the ingredients are limited to...

A Course of Mathematics: Designed for the Use of the Officers and ..., Τόμος 2

Isaac Dalby - 1813
...and 5, \veget the 5 following answers, which are all the question admits of in whole numbers, 2=5 12. How much gold of 15, of 17, and of 22 carats fine, must he mixed with 5 oz. of 18 carats fine, so that the composition may be 20 carats fine? If x,y, and z,...

An Introduction to the Elements of Algebra: Designed for the Use of Those ...

Leonhard Euler - 1821 - 216 σελίδες
...pound ; what is a pound of it worth ? Ans. 6s. I 0^d. How much gold, of 15, of 17, and of 22 carats j fine, must be mixed with 5oz. of 18 carats fine, so...carats fine, 5 of 17, and 25 of 22. t A carat is a twenty fourth part ; 22 carats fine means || of pure metal. A carat is also divided into four parts,...

Conversations on Arithmetic, with Demonstrations to Each Rule

Leonard Pierce - 1823 - 156 σελίδες
...? Ans. 75 bu 2 pe. 3^ qts. 3. How much gold of 15, 17, and 22 carats fine, must be mixed with 5 oz. of 18 carats fine, so that the composition may be 20 carats fine ? ADS. 5oz. of 15 carats fine, 5 of 17, and 25 of 22. 4. A. merchant would mix 4 sorts of wine, of...

Elements of Arithmetic

Etienne Bézout - 1824 - 219 σελίδες
...gallens at 5s. ~] IO i C0 :: 3 : 6 gallons at 5s. 6d. f. Ans. . 10 : 20 :: 3 : 6 gallons at 6s. j 2. How much gold of 15, of 17, and of 22 carats fine,...of 18 carats fine, so that the composition may be S0 carats fine ? Ans. 5oz. of 15 carats fine, 5oz. of 17, and S5 of 22. EXAMPLES FOR PRACTICE. 1. A...

An Elementary Treatise on Arithmetic: Taken Principally from the Arithmetic of

1825 - 144 σελίδες
...8s. 6d. per pound, and 14^Ib. at 5s. l0d. per pound ; what is a pound of it worth ? ' Ans. 6s. 10yd. How much gold, of 15, of 17, and of 22 carats* fine,...carat is a twenty-fourth part ; 22 carats fine means f £ of pure metal. A carat is also divided into four parts, called grains of a carat Miscellaneous...




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