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" If 4 men can do a piece of work in 6 days, in how many days can 3 men do twice as much work ? 15. "
The Youth's Assistant in Theoretic and Practical Arithmetic, : Designed for ... - Page 129
by Zadock Thompson - 1828 - 225 pages
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A Course of Mathematics ...: Designed for the Use of the Officers ..., Volume 1

Isaac Dalby - Mathematics - 1807
...the ratio of the first term to the third is equal to that of the fourth to the second. For example : If 4 men can do a piece of work in 6 days, in what lime would 8 men do the same ? Taking the proportion direct, the answer comes out 12 day* j but...
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The Youth's Assistant in Theoretic[!] and Practical Arithmetic ...

Zadock Thompson - Arithmetic - 1832 - 168 pages
...18, is evidently the other extreme, or the value of x. 1 96. 3. If 4 men can do a piece of work hi 6 days, in how many days can 8 men do it ? By analyzing...example, we find that 4 men 6 days=:l man 24 days, and I man 24 days=8 men 3 days. 8 then is the answer. Moreover it is obvious, that if 4 men can do a piece...
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The Youth's Assistant in Theorhetic [sic] and Practical Arithmetic: Designed ...

Zadock Thompson - Arithmetic - 1832 - 168 pages
...days=il man 24 days, and 1 man 24 days=8 men 3 days. 8 then is the answer. Moreover it is obvious, that if 4 men can do a piece of work in 6 days, twice the number of men will do it in half the time, or 3 days ; and generally the greater the number...
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An Intellectual Arithmetic: Upon the Inductive Method

James Stewart Eaton - Arithmetic - 1868 - 176 pages
...at 12 o'clock, what is the length of the shadow cast, at the same time, by a pole 18 feet long? 24. If 4 men can do a piece of work in 6 days, in how many days can 3 men do the same ? 25. If 5 men can do a piece of work in 3 days, in how many days can they do a piece...
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The Illustrative Practical Arithmetic by a Natural Method ...

George Augustus Walton, Electa Nobles Lincoln Walton - Arithmetic - 1869 - 336 pages
...least, perform a sufficient number by Proportion to fix the method in his mind. EXAMPLES. 1. If 5 men can do a piece of work in 6 days, in how many days can 7 men do it ? Ans. 4^ d. 2. If 15 men can do a piece of work in 12 days, how many men can do it in...
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The Illustrative Practical Arithmetic by a Natural Method with Dictation ...

George Augustus Walton, Electa N. L. Walton - Arithmetic - 1871 - 336 pages
...the pupils perform the following examples both by analysis and by proportion. EXAMPLES. 1. If 5 men can do a piece of work in 6 days, in how many days can 7 men do it ? Ans. 4$ d. 2. If 15 men can do a piece of work in 12 days, how many men can do it in...
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An Elementary Arithmetic

Daniel Barnard Hagar - Arithmetic - 1871 - 208 pages
...a horse can trot at the rate of 24 miles in 3 hours, how far can he trot in 2 hours ? 18. If 5 men can do a piece of work in 6 days, in how many days can 3 men do it ? SOLUTION. — If 5 men can do a piece of work in 6 days, 1 man will require 5 times 6...
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The Illustrative Practical Arithmetic ...

George Augustus Walton - Arithmetic - 1873
...the pupils perform the following examples both by analysis and by proportion. EXAMPLES. 1. If 5 men can do a piece of work in 6 days, in how many days can 7 men do it ? Arts. 4$ d. 2. If 15 men can do a piece of work in 12 days, how many men can do it in...
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An Intellectual Arithmetic: Upon the Inductive Method, with an Introduction ...

James Stewart Eaton - Arithmetic - 1875 - 176 pages
...12 o'clock, what is the length of the shadow cast, at the same time, by a pole 18 feet long? * 24. If 4 men can do a piece of work in 6 days, in /L. how many days can 3 men do the same ? 25. If 5 men can do a piece of work in 3 days, in how many...
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Ray's New Intellectual Arithmetic

Joseph Ray - Mental arithmetic - 1877 - 140 pages
...which are 6 days. 19. If 3 men can do a piece of work in 4 days, in how many days can 1 man do it? 20. If 4 men can do a piece of work in 6 days, in how many days can 1 man do it ? 21. If a quantity of bread serve 8 men 4 days, how many days will it serve 1 man ? 22....
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