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" If 4% bonds to the amount of $8000 face value are bought at 92^%, find the cost of the bonds, and the rate of income on the investment. 12. If 3 men can do a piece of work in 8 days of 10 hours each, how many men will be required to do the same work in... "
The American Primary School Arithmetic: Designed for the Use of Pupils in ... - Σελίδα 53
των James Robinson (Jr.) - 1851 - 96 σελίδες
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The Werner Arithmetic: Oral and Written. Book III--parts I and II, Τόμος 3

Frank H. Hall - 1898 - 256 σελίδες
...the rate of income on the investment. 12. If 3 men can do a piece of work in 8 days of 10 hours each, how many men will be required to do the same work in 6 days of 8 hours each ? (Solve by proportion.) 13. By selling a horse for $144, a profit of 60 per...

The Werner Arithmetic: Oral and Written, Βιβλίο 3

Frank H. Hall - 1898
...the rate of income on the investment. 12. If 3 men can do a piece of work in 8 days of 10 hours each, how many men will be required to do the same work in 6 days of 8 hours each ? (Solve by proportion.) 13. By selling a horse for 1144, a profit of 60 per...

The Werner Arithmetic: Oral and Written. Book III--parts I and II, Τόμος 3

Frank H. Hall - 1898 - 256 σελίδες
...the rate of income on the investment. 12. If 3 men can do a piece of work in 8 days of 10 hours each, how many men will be required to do the same work in 6 days of 8 hours each ? (Solve by proportion.) 13. By selling a horse for $144, a profit of 60 per...

The Werner Arithmetic: Oral and Written, Βιβλίο 3

Frank H. Hall - 1898
...the rate of income on the investment. 12. If 3 men can do a piece of work in 8 days of 10 hours each, how many men will be required to do the same work in 6 days of 8 hours each ? (Solve by proportion.) 13. By selling a horse for $144, a profit of 60 per...

A Complete Arithmetic ...

Frank H. Hall - 1899 - 447 σελίδες
...the rate of income on the investment. 12. If 3 men can do a piece of work in 8 days of 10 hours each, how many men will be required to do the same work in 6 days of 8 hours each ? (Solve by proportion.) 13. By selling a horse for $144, a profit of 60 per...

A Complete Arithmetic ...

Frank H. Hall - 1899 - 447 σελίδες
...the rate of income on the investment. 12. If 3 men can do a piece of work in 8 days of 10 hours each, how many men will be required to do the same work in 6 days of 8 hours each ? (Solve by proportion.) 13. By selling a horse for $144, a profit of 60 per...

School Arithmetic: Primary Book

John Marvin Colaw, John Kelley Ellwood - 1900 - 271 σελίδες
...pencils at 4* each and exchanged them for erasers at 3$ each. How many erasers did he get? 17. If 7 men can do a piece of work in 9 days, how many men will it take to do the same work in 1 day? 18. If you buy 3 dozen pencils at 20$ a dozen, and sell them...

Graded Work in Arithmetic, Βιβλίο 6

Samuel Wesley Baird - 1901
...value of the house. 15. How many pounds in 4% of 1 ton ? 16. If 20 men can do a piece of work in 7 days, how many men will be required to do the same work in 4 days? LESSON 107 2. Find the cost of a pile of wood 28 ft. long, 4 ft. wide, and 8 ft. high at $4.40...

The Werner Arithmetic: Oral and Written. Book III--parts I and II

Frank H. Hall - 1903 - 382 σελίδες
...the rate of income on the investment. 12. If 3 men can do a piece of work in 8 days of 10 hours each, how many men will be required to do the same work in 6 days of 8 hours each ? (Solve by proportion.) 13. By selling a horse for $ 144, a profit of 60 per...

Intermediate Arithmetic: For Graded Schools

Samuel Hamilton - 1907 - 286 σελίδες
...of 36 Saturdays. Find the amount earned at 12 ^ per hour. 38. If two men can do a piece of work in 8 days, how many men will be required to do the same work in 4 days ? 39. If it takes 16^ yards to make a dress, how many yards will it take to make 12 dresses...




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