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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. "
Intellectual Arithmetic, Upon the Inductive Method of Instruction - Σελίδα 80
των Warren Colburn - 1847 - 160 σελίδες
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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...

Practical arithmetic for schools

Robert Miller (M.A., of Edinburgh.) - 1873 - 120 σελίδες
...of | of the remainder for £3006J. What is the value of the whole at the same rate ? (48.) If 10 men can do a piece of work in 8 days, how many men could do a piece of work 4 times as great in J of the time ? (49.) If 27 men can reap a field in 15...

The Model Mental Arithmetic: Containing Oral Exercises for Graded and ...

Edgar Arthur Singer - 1876 - 198 σελίδες
...? The ratio of 2 oranges to 8 oranges equals the ratio of 10 cents to how many cents ? 8. If 6 men do a piece of work in 8 days, how many men would be required to do it in 1 day ? In 4 days ? 9. If 2 yards of muslin are worth 25| cents, how much are...

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

Emerson Elbridge White - 1876 - 236 σελίδες
...the lot? 8. If 1 man can build a wall in 36 daj's, 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 vessels start from the same port and sail in the same direction, one...

Manual of Intellectual Arithmetic: An Independent Treatise Upon the Basis of ...

Benjamin Greenleaf - 1877 - 160 σελίδες
...If it takes 4 men 8 days to do a piece of work, it will take 1 man. 4 times 8 days, or 32 days. 2. If 4 men can do a piece of work in 8 days, how many men will it take to do it in 1 day ? 3. If 5 men can reap a field in 7 days, how long will it take 1 man...

First Steps Among Figures: A Drill Book in the Fundamental Rules of Arithmetic

Levi N. Beebe - 1877 - 382 σελίδες
...cost than the orange ? 1 8. If a boy can walk 12 miles in 4 hours, how far can he walk in 5 hours ? 19. If 4 men can do a piece of work in 8 days, how long will it take one man ? 20. Jane bought 5 figs for 3 cents each, and a yard of cloth for 9 cents...

Manual of Intellectual Arithmetic: An Independent Treatise Upon the Basis of ...

Benjamin Greenleaf - 1877 - 160 σελίδες
...eleven = how many ? 59. Twelve X ten = how many ? 60. Twelve X twelve = how many ? LESSON XIV. 26* 1. If 4 men can do a piece of work in 8 days how long will it take 1 man to do it ? SOLUTION. — If it takes 4 men 8 days to do a piece of work, it...

Intellectual Arithmetic

James Stewart Eaton - 1877 - 182 σελίδες
...men can do a certain piece of work in 6 days, 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...

The practice of arithmetic

Daniel O'Sullivan - 1877 - 194 σελίδες
...what should be charged for the carriage of 22 tons a distance of 140 English miles? (60) Fifteen men can do a piece of work in 8 days : how many men could do -|- of the work in -| of that time ? (61) Working lo hrs. a day, 15 horses can plough 20 acres...




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