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" How many days did he work, and how many days was he idle ? Let x = the number of days he worked. "
An Introduction to Algebra Upon the Inductive Method of Instruction - Σελίδα 35
των Warren Colburn - 1831 - 276 σελίδες
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The Origins of the American High School

William J. Reese - 1999 - 354 σελίδες
...was idle, he paid 20 cents for his boarding. At the expiration of the time, he received 3 dollars; how many days did he work, and how many days was he idle?” Ray and other authors presented problems that involved young clerks who broke goods in the dry goods...
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Using History to Teach Mathematics: An International Perspective

Victor J. Katz - 2000 - 284 σελίδες
...a day for his labor and pays $.50 a day for his board; at the finish of 40 days, he has saved $50. How many days did he work and how many days was he idle? (United States, 1873). Compensation for work performed reveal social injustices, societal inequities...
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Elements of Algebra: For Colleges, Schools, and Private Students

Joseph Ray - 1875 - 424 σελίδες
...that he was idle, he paid 25 cents for his boarding. At the expiration of the time, he received $4 ; how many days did he work, and how many days was he...the number of days he worked ; Then, . . 20— x= " " " " was idle. Also, . . 50x= wages due for work. And . . . 25(20— x)= the amount to be deducted...

Ray's Algebra, Part First: On the Analytic and Inductive Methods of ..., Μέρος 1

Joseph Ray - 1848 - 252 σελίδες
...was idle, he paid 20 cents for his boarding. At the expiration of the time, he received 3 dollars ; how many days did he work, and how many days was he idle ? Let z= the number of days he worked. Then 30 — z= the number of days he was idle-. Also 25a:== wages...

Ray's Algebra, Part First: On the Analytic and Inductive Methods of ..., Μέρος 1

Joseph Ray - 1848 - 260 σελίδες
...boarding. At the expiration of thu time, he received 3 dollars; how many days did lie •work, and hoiv many days was he idle? Let x= the number of days he worked. Then 30 — z= the number of days he was idle. Also 25x= wages duo for work. And 20(30 — z)= the amount...

The Calendar of Owens college, Manchester

Manchester univ - 1877 - 544 σελίδες
...day he works, and pays q pence for every day he is idle. At the end of the time he receives a pence. How many days did he work, and how many days was he idle ? JUNIOR GEOMETRY. 2. If a straight line intersect two parallel straight lines, it makes the two interior...




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