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" If 4 men can do a piece of work in 8 days, how many men would it take to do the same work in 4 days ? 20. "
Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method ... - Σελίδα 80
των Warren Colburn - 1829 - 172 σελίδες
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Intellectual Arithmetic, Upon the Inductive Method of Instruction

Warren Colburn - 1836 - 216 σελίδες
...how much remains in the cistern in an hour ? and in how many hours will the cistern be filled ? 19. If 4 men can do a piece of work in 8 days, how many...same work in 4 days ? 20. If 6 men can do a piece of woj'k) in 9 days, in how many days would 2 men do it ?U 21. If 8 men can do a piece of work in 5 days,...

The Sure Guide to Written Arithmetic: Designed for Beginners, and Summer ...

Peirpont Edward Bates Botham - 1836 - 104 σελίδες
...2. If 2 men in 3 days will earn 14 dollars : how much will 7 men earn in the same time ? 3. If 5 men can do a piece of work in 8 days : how many men must be employed to perform the whole in 1 day? 4. If 4 tuns of hay will keep 2 cattle over the winter...

Welch's Improved American Arithmetic, Adapted to the Currency of the United ...

1847 - 292 σελίδες
...men can build a house in 90 days, how long will it take 20 men to build it ? Ans. 54 days. Ex. 11. If 6 men can do a piece of work in 9 days, how long will it take 2 men to do it ? Ans. 27 days. Ex. 12. If f of a ton of coal cost $2,61, how...

The American Equater: Or, Arithmetic Simplified in which Equations are Used ...

Conley Plotts - 1848 - 278 σελίδες
...how long would the same quantity of provisions last 7 men ? 48. If 7 men can do a piece of work in 4 days, how many men would it take to do the same work in 2 days ? 49. A gentleman had a quantity of pavement to lay, which the contractor thought would take...

Arithmetic, Oral and Written, Practically Applied by Means of Suggestive ...

Thomas H. Palmer - 1854 - 368 σελίδες
...20 men can do a piece of work in 12 days, in what time may 30 men do the same work ? 04. If 30 men can do a piece of work in 8 days, how many men could do the same piece of work in 12 days? PART II. WRITTEN ARITHMETIC. INTRODUCTION. ADDRESSED TO...

Arithmetic, Oral and Written, Practically Applied by Means of Suggestive ...

Thomas H. Palmer - 1854 - 356 σελίδες
...the weight of sugar, at 6 cents a pound, may be purchased for 4 dollars and 20 cents ? 64. If 30 men can do a piece of work in 8 days, how many men could do the same piece of work in 12 days ? 65. When 20 men can do a piece of work in 12 days, in...

The Rudiments of Written Arithmetic: Containing Slate and Black-board ...

Horatio Nelson Robinson - 1866 - 200 σελίδες
...flour, how many bushels will be required to buy 3 barrels ? 5 barrels ? 7 barrels ? 9 barrels ? 13. If 4 men can do a piece of work in 8 days, how many days will it take one man to do it ? 14. If 7 men can build a wall in 3 days, how long will it take...

The Analysis of Intellectual Arithmetic: With Mental and Blackboard ...

Stoddard A. Felter - 1868 - 238 σελίδες
...126. If 4 men can do f of a piece of work in £ of a week, how long will it take 1 man to do it ? 127. If 6 men can do a piece of work in 9 days, how many men would it take to do it in 1 day? 128. If 6 men can cut 12 cords of wood in 12 days, how...

An Intellectual Arithmetic, Upon the Inductive Method: With an Introduction ...

James Stewart Eaton - 1868 - 190 σελίδες
...men can do a certain piece of work in 6 ddys, in how many days can 4 men do the same ? 13. If 9 men can do a piece of work in 8 days, how many men can do the same in 12 days? 14. If 4 men can do a piece of work in 6 days, in how many days can 3 men...

An Intermediate Arithmetic: Uniting Mental and Written Exercises in a ...

Emerson Elbridge White - 1873 - 260 σελίδες
...the lot? 8. If one man can build a wall in 36 days, how many men can build it in 4 days ? 9. If 6 men can do a piece of work in 8 days, how many men can do it in 12 days? 10. Two steamers start from the same port and sail in the same direction, one...




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