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" If 9 men can do a piece of work in 8 days, how many men can do the same in 12 days? "
Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method ... - Σελίδα 76
των Warren Colburn - 1849
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First Steps Among Figures: A Drill Book in the Fundamental Rules of Arithmetic

Levi N. Beebe - 1877 - 335 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 - 151 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
...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
...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...

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

James Stewart Eaton - 1878 - 176 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...

A Mental Arithmetic on the Inductive Plan: Being an Advanced Intellectual ...

Benjamin Greenleaf - 1879 - 180 σελίδες
...if it take 4 men 8 days to do it, it will take 1 man 4 times 8 days, which are 32 days. Therefore, if 4 men can do a piece of work in 8 days, it will take 1 man 32 days to do it. ABBREVIATED FORJI. — Since it takes 4 men 8 days to do a piece...

Bradbury's Eaton's Practical Arithmetic: Combining Oral and Written Exercises

William Frothingham Bradbury - 1879 - 374 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...

Annual Report, Τόμος 55

Cincinnati (Ohio). Board of Education - 1884
...the rate of 5 yds. for $4, and sold it at the rate of 4 yds. for $5. What per cent, did he gain ? 5. If 4 men can do a piece of work in 8 days, how many men can do a piece \ as large in \ of the time ? 6. Sold a watch for $40, by which I lost 83J per cent....

The Werner Mental Arithmetic

Albert Newton Raub - 1894 - 158 σελίδες
...cost? 31. If a turkey cost $1f, how many turkeys at the same rate can be bought for $8| ? 32. If a man can do a piece of work in 8£ days, how many men will be required to do the work in 2g days ? 33. How many quarts of berries at ^ of a dollar a quart...

A Common School Arithmetic

Bothwell Graham - 1895 - 207 σελίδες
...of work in 10 days, and B can do it in 15 days. In what time can they do it together ? 90. If 60 men can do a piece of work in 8 days, how many men can do the same work in 20 days ? 91. If 10 cows eat 16 tons of hay, how many cows will 112 tons supply...




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