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" ... can do a piece of work in 28 days. How many men could do it in 84 days? "
A Practical Introduction to Arithmetic: Or, The Teacher of Arithmetic's ... - Σελίδα 48
των Charles Marshall - 1789 - 100 σελίδες
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο

The United States Arithmetic: Designed for Academies and Schools

William Vogdes - 1847 - 256 σελίδες
...piece of work in 48 days, how many are sufficient to finish it in 32 days? 56. If 18 men can perform a piece of work in 28 days, how many men can do it in one-fourth part of the time ? 57. Supposé 60 men to complete a piece of work in 1\ months, how...

Arithmetic, theoretical and practical. [With] Key

Chambers W. and R., ltd - 1859
...land may be rented for £63, if the rent of 364 acres be £546 ? ..... Ans. 42 nc. 8. If 54 workmen can do a piece of work in 28 days, how many men could hare done the same in 18 days? . Ans. 84 men. 9. If 39 men can perform a piece of work in 275...

Higher Arithmetic

John Henry Walsh - 1893
...quantity of flour will last 21 soldiers 16 weeks, for what time will it last 24 soldiers ? 11. If 9 men can do a piece of work in 28 days, how many men can do the work in 12 days ? 12. If a traveler walks 140 mi. in 8 da., walking 7 hr. a day, how many miles can...

For sixth, seventh, and eighth grades

George Edward Atwood - 1894
...how many days can 4 men do a piece of work, if 14 men can do the same work in 12 days ? 13. If 18 men can do a piece of work in 28 days, how many men may be withdrawn and the work finished in 36 days ? 14. If a man can travel 360 miles in 20 days of...

Higher Arithmetic, Including Easy Algebraic Equations and Simple Geometrical ...

John Henry Walsh - 1895 - 361 σελίδες
...quantity of flour will last 21 soldiers 16 weeks, for what time will it last 24 soldiers ? 11. If 9 men can do a piece of work in 28 days, how many men can do the work in 12 days ? 12. If a traveler walks 140 mi. in 8 da., walking 7 hr. a day, how many miles can...

For 6th-8th grade

George Edward Atwood - 1899
...how many days can 4 men do a piece of work, if 14 men can do the same work in 12 days ? 13. If 18 men can do a piece of work in 28 days, how many men may be withdrawn and the work finished in 36 days ? 14. If a man can travel 360 miles in 20 days of...

Secondary Mathematics: I-, Τόμος 1

Harry Morton Keal, Nancy Seymour Phelps - 1917
...hrs.? 3. If 40 men can do a piece of work in 10 days, how long will it take 25 men to do it? 4. 12 men can do a piece of work in 28 days. How many men could do it in 84 days? 6. The number of posts required for a fence is 42 when they are placed 18 ft....

Eighth Grade Mathematic

Harry Morton Keal - 1917 - 132 σελίδες
...hrs.? 3. If 40 men can do a piece of work in 10 days, how long will it take 25 men to do it? 4. 12 men can do a piece of work in 28 days. How many men could do it in 84 days? 6. The number of posts required for a fence is 42 when they are placed 18 ft....




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