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" RULE. Multiply each quantity by its rate ; then divide the sum of the products by the sum of the quantities, or the whole composition, and the quotient will be the rate of the compound required. "
A system of arithmetic - Página 36
por John Husband (math. master, Berwick.) - 1841
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Mathematics: Compiled from the Best Authors and Intended to be the ..., Volumen1

1801 - 446 páginas
...finding the rate of the 'compound, from having the rates and quantities of the sev* eral simples given, RULE.* ' Multiply each quantity by its rate ; then...sum. of the products by the sum of the quantities, or the whole composition, * The truth of this rule is too evident to need a demonstration. NOTE. If...
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Mathematics: Compiled from the Best Authors, and Intended to be ..., Volumen1

Samuel Webber - 1808 - 466 páginas
...into two principal cases, called Alligation medial and Alligation alternate. .... ALLIGA TION MEDIAL. Multiply each quantity by its rate ; then divide the...sum of the products by the sum of the quantities, or the whole composition, and the quotient will be the rate of the compound required. EXAMPLES. 1....
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Pocket Encyclopedia: Or, A Dictionary of Arts, Sciences, and ..., Volumen1

Edward Augustus Kendall - 1811 - 962 páginas
...of 1 lb. of the mixture. Rule. Multiply each quantity by its rate and add all the products together, then divide the sum of the products, by the sum of the quantities, and the quotient will be the rate sought. Thus in the example, lb. s. 6 CX 5K — !«and 14) 78 (St. 6di Answer. f, H •-.-. lo 7()...
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A pocket encyclopædia, or library of general knowledge, Volúmenes1-4

Edward Augustus Kendall - 1811 - 462 páginas
...of 1 lb. of the mixture. Rule. Multiply each quantity by its rate and add all the products together, then divide the sum of the products, by the sum of the quantities, and the quotient will be the rate sought. Thus in the example, Ib. «. 8 6 II 48 and 14) 78 (5s. 6rfJ Answer. » » 7 &c. Ex. in alligation...
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A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - 1811 - 406 páginas
...quantities together into another sum ; then divide the former sum by the latter, that is, the sum of the products by the sum of the quantities, and the quotient will be the rate or quality of the composition required. EXAMPLES. 1. If three sorts of gunpowder be mixed together,...
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A Course of Mathematics: For the Use of Academies as Well as Private Tuition

Charles Hutton - 1812 - 620 páginas
...quantities together into another sum ; then divide the former sum by the latter, that is, the sum of the products by the sum of the quantities, and the quotient will be the rate or quality of the composition required. EXAMPLES. 1. If three sorts of gunpowder be mixed together,...
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A System of Arithmetic: Reprinted from the Mathematical Text-book

Samuel Webber - 1812 - 260 páginas
...the rates and quantities of the several simples given. RULE.* Multiply each quantity Ly its rale ; then divide the sum of the products by the sum of the quantities, or the whole composition, and the quotient will be the rate of the compound required. EXAMPLES. 1....
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A System of Practical Arithmetic: Applicable to the Present State of Trade ...

Jeremiah Joyce - 1812 - 274 páginas
...of several quantities of different values. RULE. Multiply each quantity ly its respective value, and divide the sum of the products by the sum of the quantities. •Ex. 1. A tea-dealer mixes 31 cwt. of tea, at '9s, per Ib., with 2 cwt. at Is., and 41 cwt. at 5s....
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Logarithmick Arithmetick: Containing a New and Correct Table of Logarithms ...

1818 - 264 páginas
...rate, or price of the com* paund, by having the rates and quantities of the several simples given. RULE. Multiply each quantity by its rate ; then divide...sum of the products by the sum of the quantities, the quotient will be the rate of the compound required. EXAMPLES. 1. Suppose 15 bushels of rye, at...
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A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - 1822 - 616 páginas
...quantities together into another sum ; then divide the former sum by the latter, that is, the sum of the products by the sum of the quantities, and the quotient will be the rate or quality of the composition required. EXAMPLES. If three sorts of gunpowder be mixed together, viz....
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