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" A man walks 18 mi. 106 rds. 3f yards in 5£ hours. How long does he take to walk a mile and a half? 50. When an ounce of gold is worth $19.45, what is the value of .04 of a pound ? Ex. If 27 men can do a piece of work in 14 days, working 10 hours a day,... "
The standard arithmetic - Σελίδα 7
των Ebenezer L. Jones - 1863
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The Principles and Practice of Arithmetic: Comprising the Nature and Use of ...

John Hind - 1840 - 252 σελίδες
...his creditors receive in the pound? Answer: 10*. 6\d.^. (18) 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?...

Rudimentary arithmetic

James Haddon - 1849 - 144 σελίδες
...army of 22536 soldiers consume in 112 days? Ans. 2808 days. 61. 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 a similar piece of work in 45 days, the work of a boy being half...

A collection of examples in pure and mixed mathematics, with hints and ...

Alfred Wrigley - 1852 - 344 σελίδες
...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...

The principles and practice of arithmetic

John Hind - 1856 - 346 σελίδες
...build in 43 days of 10hrs. each ? Answer: 229yds. 1ft. (15) 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...

Collection of Examples and Problems in Pure and Mixed Mathematics: With ...

Alfred Wrigley - 1862 - 330 σελίδες
...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 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...

A Treatise on Arithmetic

James Hamblin Smith, Thomas Kirkland - 1877 - 376 σελίδες
...(4264xl2i>.; ... his assets are tiliil?», or £2666. Ex. (7). If 27 men can do apiece of work in 14 days, working 10 hours a day, how many hours a day must 12 men work to do the same in 45 days ? Since 27 men can do the work in (14x10) hours, or 140 hours,...

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

William Frothingham Bradbury - 1879 - 392 σελίδες
...ounce of gold as 2 to 33 ? 532. If 18 men can build a wall 140 rods, 6 feet high, 3 feet thick, in 9 days, working 10 hours a day, how many hours a day must 25 men work to build a wall 220 rods long, 5 feet high, and 4 feet thick, in 12 days ? 533. If 6 men...

A Practical Arithmetic

George Albert Wentworth, Thomas Hill - 1881 - 446 σελίδες
...gold is worth $19.45, what is the value of .04 of a pound ? Ex. If 27 men can do a piece of work in 14 days, working 10 hours a day, how many hours a day must 12 men work to do the same work in 45 days? Since 27 men can do the work in 14 x 10 hours = 140 hours,...

A Practical Arithmetic

George Albert Wentworth, Thomas Hill - 1882 - 376 σελίδες
...gold is worth $19.45, what is the value of .04 of a pound ? Ex. If 27 men can do a piece of work in 14 days, working 10 hours a day, how many hours a day must 12 men work to do the same work in 45 days? Since 27 men can do the work in 14 x 10 hours = 140 hours,...

How to Teach the Method of Unity: An Exemplification of the Method, with Its ...

Alfonzo Gardiner - 1883 - 152 σελίδες
...in the unity line is similar to that in Ex. 17. (Ex. 31.) — If 9 men can do a piece of work in 14 days, working 10 hours a day, how many hours a day must 12 men work to do the same work in 10 days? This, though really a Compound Proportion sum, may be worked...




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