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" If 27 men can do a piece of work in 14 days, working 10 hours a day ; how many hours a day must 24 boys work, in order to complete the same in 45 days : the work of a boy being half that of a man ? 13. "
Rudimentary arithmetic - Page 48
by James Haddon - 1849 - 128 pages
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The Principles and Practice of Arithmetic: Comprising the Nature and Use of ...

John Hind - Arithmetic - 1840 - 252 pages
...only £784. 17*. 4rf. ; how much will his creditors receive in the pound? Answer: 10*. 6\d.^. (18) If 27 men can do a piece of work in 14 days, working...hours a day must 24 boys work, in order to complete the same in 45 days, the work of a boy being half that of a man? Answer : 8 hours. (19) If 10 cannon,...
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Arithmetic on the Productive System: Accompanied by a Key and Cubical Blocks

Roswell Chamberlain Smith - Arithmetic - 1842 - 320 pages
...hours, in what time can they do three times as much, all working together? A. Ih. 47m. 23r3Tsec. 98. If 27 men can do a piece of work in 14 days, working 10 hours in a day, how many hours a day must 24 boys work, in order to complete the same in 45 days, the work...
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Arithmetic on the Productive System: Accompanied by a Key and Cubical Blocks

Roswell Chamberlain Smith - Arithmetic - 1843 - 320 pages
...three times 18 much, all working together ? A. Ih. 47m. 23 T 3 T sec. A. 3 days 12h. 46 T V 5 m. 98. If 27 men can do a piece of work in 14 days, working 10 hours in a day, how many hours a day must 24 boys work, in order to complete the same in 45 days, the work...
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A system of practical mathematics; being no.xvi. of a new series of school-books

Scottish school-book assoc - 1845 - 444 pages
...twelve hours a-day, can reap a field measuring 192 yards by 300 yards, in four days? Ans. 5 men. 3. If 27 men can do a piece of work in 14 days, working 10 hours a-day, how many hours a-day must 24 boys work, in order to complete the same in 45 days, the work of...
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Lectures on the Philosophy of Arithmetic and the Adaptation of that Science ...

Uriah Parke - Arithmetic - 1849 - 414 pages
...2 inches in diameter ; allowing no wastage of metal, required the number it will make ? Ans. 27. 2. If 27 men can do a piece of work in 14 days, working 10 hours in a day, how many hours a day must 24 boys work, in order to complete the same in 45 days; the work...
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Lectures on the Philosophy of Arithmetic and the Adaptation of that Science ...

Uriah Parke - Arithmetic - 1850 - 402 pages
...2 inches in diameter ; allowing no wastage of metal, required the number it will make ? Ans. 27. 2. If 27 men can do a piece of work in 14 days, working 10 hours in a day, how many hours a day must 24 boys work, in order to complete the same in 45 days; the work...
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A collection of examples in pure and mixed mathematics, with hints and ...

Alfred Wrigley - 1852 - 344 pages
...Work in, when 45 men can do the same in 30 days of 12 hours each? 220. If 27 men can do a piece pf work in 14 days, working 10 hours a day ; how many...hours a day must 24 boys work, in order to complete the same in 45 days ; the work of a boy being half that of a man ? I 27 I 221. If - of a sheep be worth...
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The principles and practice of arithmetic

John Hind - 1856 - 346 pages
...10ft. high and 2?in. thick, could 12 men build in 43 days of 10hrs. each ? Answer: 229yds. 1ft. (15) If 27 men can do a piece of work in 14 days, working...hours a day must 24 boys work, in order to complete the same in 45 days, the work of a boy being half that of a man ? Answer: 7 hours. (16) If 4 artillery...
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Arithmetic on the Productive System: Accompanied by a Key and Cubical Blocks

Roswell Chamberlain Smith - Arithmetic - 1856 - 334 pages
...hours, in what time can they do three times as much, all working together ? A. 111. 47m. 23 ,-' sec. 98. If 27 men can do a piece of work in 14 days, working 10 hours in a day, how many hours a day must 24 boys work, in order to com • plete the same in 45 days, the...
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A collection of examples in pure and mixed mathematics, with hints and ...

Alfred Wrigley - 1857 - 332 pages
...take to perform a piece of work in ; when 45 men can do the same in 30 days of 1 2 hours each ? 12. If 27 men can do a piece of work in 14 days, working...hours a day must 24 boys work, in order to complete the same in 45 days : the work of a boy being half that of a man ? 13. If 5 men and 7 boys can reap...
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