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" If six men dig a certain quantity of trench in fourteen hours, how many hours will it require for twelve men to dig the same quantity? "
Encyclopædia Americana: A Popular Dictionary of Arts, Sciences, Literature ... - Page 104
edited by - 1835
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A Course of Mathematics: For the Use of Academies as Well as Private Tuition

Charles Hutton - 1812 - 620 pages
...and the staling must be thus, As 3 : 2 1 : : 6 : 42, or thus, As 6 : 42 : : 3 : 2 1 . But the Rule of Three Inverse, is when more requires less, or less requires more. As in this : if 3 men dig a certain quantity of trench in 14 hours, in how many hours will 6 men dig the like...
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A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - 1822 - 616 pages
...Direct ; and the stating must be thus, As 3 : 81 : : 6 : 42, or thus, As 6 : 42 : : 3 : 21. But the Rule of Three Inverse, is when more requires less, or less requires more. As in this: if 3 men dig a certain quantity of trench in 14 hours, in how many hours will 6 men dig the like quantity...
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Pike's System of Arithmetic Abridged: To which are Added Appropriate ...

Nicolas Pike, Dudley Leavitt - 1826 - 214 pages
...Direct ; and the stating must be thus, As 3 : 21 : : 6 : 42, or thus, As 6 : 42 : : 3 : 21. But the Rule of Three Inverse, is when more requires less, or less requires more. As in this ; if 3 men di^ a certain quantity of trench in 14 hours, in how many hours will 6 men dig the like...
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The Practical Arithmetic: In which the Principles of Operating by Numbers ...

1829 - 196 pages
...required the numher of apples that Billy must give Ahraham for 15 of his pears. Ans. 40. The null; of Three Inverse is when more requires less, or less requires more, as in this example : If 6 men dig a certain quantity of trench in 14 hours, how many fiours will it require 12...
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Pike's System of Arithmetick[!] Abridged ...: To which are Added Appropriate ...

Nicolas Pike, Dudley Leavitt - 1830 - 240 pages
...Direct; and the stating must be thus, As 3 : 21 : : 6 : 42, or thus, As 6 : 42 : : 3 : 21, But the Rule of Three Inverse, is when more requires less, or less requires more. As in this; if 3 men dig a certain quantity of trench in 14 hours, in how many hours will 6 men dig the like quantity...
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Practical and Mental Arithmetic on a New Plan: In which Mental Arithmetic is ...

Roswell Chamberlain Smith - 1831 - 286 pages
...per ell French ? (3) A. $9. 32. Bought 4 tuns of wine for $322,56; what did 1 pipe cost ? The Rule of Three Inverse is, when more requires less, or less requires more, and may lie known thus ; more requires less, when the third term is nurre than the first, and requires...
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Encyclopædia Americana: A Popular Dictionary of Arts, Sciences ..., Volume 11

Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford, Henry Vethake - 1832 - 622 pages
...; and all questions that are in this class are said to be in the rule of three direct. — The rule of three inverse, is when more requires less, or less...in performing the same work ?" These cases are both in the inverse rule ; for in the first more requires less, that is, twelve men being more than six,...
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Encyclopædia Americana: A Popular Dictionary of Arts, Sciences ..., Volume 11

Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford, Henry Vethake - 1832 - 616 pages
...them ; and all questions that are in this class are said to be in the rule of three direct.—The rule of three inverse, is when more requires less, or less...for twelve men to dig the same quantity?" or thus, "Ifsix men perform a piece of work in seven hours, how long will three men be in performing the same...
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Encyclopædia Americana, ed. by F. Lieber assisted by E. Wigglesworth (and T ...

Encyclopaedia Americana - 1832 - 620 pages
...and all questions (hat ¡ire in this class are said to he in the rulo of three direct. — The rule of three inverse, is when more requires less, or less requires more ; as in_ this case — " If six men dig a certain quantity of trench in fourteen hours, how many hours wilt...
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The New System of Practical Arithmetic: Whereby Most of the Various Problems ...

Charles Potts - 1835 - 202 pages
...less, for the less men there are employed, the less will be the work done in the same time. The rule of three inverse, is when more requires less, or less requires more ; as — If 3 men dig a certain number of yards in 14 hours, in how many hours will 6 men do the same work...
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