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" If 3(J men perform a piece of work in 20 days ; how many men will accomplish another piece of work 4 times as large in a fifth part of the time ? S0 : 20 : : 1 4 : : 4 Ms. "
A Treatise on Arithmetic - Σελίδα 170
των James Hamblin Smith - 1880 - 320 σελίδες
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The Tutor's Assistant Modernised: Or, A Regular System of Practical ...

Thomas Peacock - 1791 - 283 σελίδες
...Anf. ol. is. loi -id. 41. If 15 men can perform a piece of workNin 22 days ; how many men will finiih another piece of work 4 times as large in a fifth part of the time ? Anf. 300.' 42. What fum can I fpend daily, out of an income of 1500!. per annum, to lay up 400 guineas...

Daboll's Schoolmaster's Assistant: Improved and Enlarged : Being a Plain and ...

Nathan Daboll - 1813 - 240 σελίδες
...months? Ans. 24 bushels. 8. If 30 men perform a piece of work in 20 days ; how many men will accomplish another piece of work 4 times as large in a fifth part of the time ? 60 : 20 : : I 4 : : 4 Ans. 600. 9. If the carriage of 5 cwt. 3 qrs. 150 miles, cost 2-f dollars 58...

Daboll's Schoolmaster's Assistant: Improved and Enlarged. Being a Plain ...

Nathan Daboll - 1818 - 240 σελίδες
...? Ans. 24 bushels. 8. If 3(J men perform a piece of work in 20 days ; how many men will accomplish another piece of work 4 times as large in a fifth part of the time ? S0 : 20 : : 1 4 : : 4 Ms. 600. 9. If the carriage of 5 cwt. 3 qrs. 150 miles, cost 24 dpllars 58...

Logarithmick Arithmetick: Containing a New and Correct Table of Logarithms ...

1818 - 251 σελίδες
...same rate ? Ans. g 50 00 22. If 30 men perform a piece of work in 1 1 dap, how manymen can accomplish another piece of work 4 times as large in, a fifth part of the time ? Ans. 600 23. A wall that is to be built to the height of 27 feet, was raised 9 feet by 12 men in...

Daboll's Schoolmaster's Assistant, Improved and Enlarged

Nathan Daboll - 1825 - 240 σελίδες
...months ? Ans. 24 bushels. 8. If 30 men perform a piece of work in 20 days ; how many men will accompli-h another piece of work 4 times as large in a fifth part of the time f П0 : 20 : : 1 4 : : 4 .3ns. 600. 9. If the carriage of 5 cwt. 3 qrs. 150 miles, cost 24 dollars...

An Elementary Treatise on Arithmetic: Taken Principally from the Arithmetic ...

Silvestre François Lacroix - 1825 - 144 σελίδες
...? Ans. 12yds. If 30 men can perform a piece of work in 1 1 days, how many . r_ men will accomplish another piece of work, 4 times as large, in a *' : fifth part of the time ? Ans. 600. A wall that is to be built to the height of 27 feet, was raised 9 *i i_ feet by 12 men...

An Elementary Treatise on Arithmetic: Taken Principally from the Arithmetic of

Silvestre François Lacroix - 1825 - 144 σελίδες
...wide ? Ans. 12yds. If 30 men can perform a piece of work in 1 1 days, how many men will accomplish another piece of work, 4 times as large, in a fifth part of the time ? Ans. 60O. A wall that is to be built to the height of 27 feet, was raised 9 feet 'by 12 men in 6...

A Short System of Practical Arithmetic: Compiled from the Best Authorities ...

William Kinne - 1829
...deep ? Aus 288^*^ days. 11. 1f 30 men perform a piece of work in 20 days, how many men will effect another piece of work, 4 times as large, in a fifth part of the time ? Ans. 600 men. 12. What principal will gain $315 in 7 years, at 6 per cent, per annum T Ans. $750....

A Short System of Practical Arithmetic: Compiled from the Best Authorities ...

William Kinne - 1831 - 240 σελίδες
...deep ? Ans. 288^W days. 11. If 30 men perform a piece of work in 20 days, how many men will effect another piece of work, 4 times as large, in a fifth part of the time 1 Arts, 600 men. CONJOINED PROPORTION. CONJOINED PnopoRTioN is when the coins, weights, or measures...

The Arithmetical Manual

Samuel Read Hall - 1832 - 288 σελίδες
...? Ans. 24 bushels. 19. If 30 men perform a piece of work in 20 days ; how many men will accomplish another piece of work 4 times as large, in a fifth part of the time ? Ans. 600. 20. What principal at 6 per cent. per annum, will gain U£. in 7 months ? Ans. 400.£....




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