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" If 8 men can do a piece of work in 5 days, in how many days would they do a piece of work 4 times as large ? 22. "
Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method ... - Σελίδα 78
των Warren Colburn - 1826 - 172 σελίδες
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A Practical Arithmetic: Designed for Grammar Schools and Academies

George E. Seymour - 1880 - 310 σελίδες
...rents for $374.70 per annum, what will be the rent on 35 A. 90 P. at the same rate ? 21. If 12 men can do a piece of work in 5^ days, in how many days can 8 men and 5 boys do the work, if a man can work 2i times as fast as a boy? 22. A prisoner escaped...

Graded Problems in Arithmetic and Mensuration

Samuel Mecutchen - 1880 - 232 σελίδες
...j- of it. If the whole value is $18200. what is the value of B's share? • 61. If 10 men and 7 boys can do a piece of work in 3$ days, how many men can do it in 8^ days, allowing the work of 9 boys to equal the work of 5 men ? -62. M is 136£ yards...

An Arithmetic for Preparatory Schools, High Schools, and Academies

Charles Austin Hobbs - 1889 - 343 σελίδες
...and second effects are respectively $36 and x dollars. Hence the proportion is 15 : 25 :: 38 : x. II. If 8 men can do a piece of work in 5 days, how long 'will it take 10 men to do the same work ? 8 : 10 ) -. 1 Let the required number of days be...

Number Lessons: A Book for Second and Third Year Pupils

Charles Edward White - 1891
...of 25 + i of 24 = ? 19. In how many ways can you change a quarter? (Picture.) Lesson 16. 1. If 5 men can do a piece of work in 5 days, in how many days can 1 man do it ? 2. Mary had a quarter of a dollar ; she bought 2 books for 10 ct. and 3 dolls for...

Mental Arithmetic

Edward Weidenhamer - 1896 - 173 σελίδες
...much as he had lost, spent i as much as he then had, and now has $92. How much had he at first? 179. If 8 men can do a piece of work in 5 days, how long will it take 5 men to finish the work after 10 men have worked at it 2 days? 180. Ten men...

Lippincott's Practical Arithmetic: Embracing the Science and Practical ...

James Morgan Rawlins - 1899 - 437 σελίδες
...Analysis. If 8 Ib. = 40ets, 1 Ib. = 5 cts. ; x = 100, the cost of 20. 2 0 Ib. = 100 cts. 2. If 6 men can do a piece of work in 5 days, in how many days can 10 men do the work ? Process. We find that the answer, or x, will be less than the third quantity,...

Lippincott's Mental Arithmetic: Embracing the Principles of Analysis and ...

James Morgan Rawlins - 1899 - 185 σελίδες
...14. If a ton of hay can be bought for $12f , what part of a ton can be bought for $6^- ? 15. If 5 men can do a piece of work in 5 days, in how many days can 4 men do the work ? 16. By working 10 hours a day a man can do a piece of work in 24 days. How...

Lippincott's Practical Arithmetic: Embracing the Science and Practical ...

James Morgan Rawlins - 1899 - 437 σελίδες
...8 : 2 0. 5. x : 16 = 20 80. 6. 18: 2; = 14 42. 7. 12 : 10 = x 22. 8. 16 : 8 = 24 x. 2. If 6 men cau do a piece of work in 5 days, in how many days can 10 men do the work ? Process. We find that the answer, or x, will be less than the third quantity,...

Book three (1901)

Isaac Oscar Winslow - 1901
...9 hours a day, how many yards will be manufactured when the mill runs 10| hours a day. 29. If 9 men can do a piece of work in 5 days, in how many days can 4 men do the same work ? 30. If 8 men can paint 5 houses in a week, how many can 40 men paint in...

Complete Graded Arithmetic: Third Grade

George Edward Atwood - 1901 - 132 σελίδες
...If a square foot of gold paper is worth 40 cents, how much is a 2-foot square worth ? 16. If 8 men can do a piece of work in 3£ days, how many men can do it in 4 days ? In 2 days ? In 7 days ? LESSON 78 1. Multiply 40,300 by 700. 2. 3,797,405 ч-...




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