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" If 7 men can do a piece of work in 4f days, how long will it take 1 man to do it ? How long will it take 3 men to do it ? 4. "
First lessons in arithmetic: on the plan of Pestalozzi, with some improvements - Σελίδα 122
των Warren Colburn - 1825 - 172 σελίδες
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Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method ...

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Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method ...

Warren Colburn - 1829 - 172 σελίδες
...sold it for f of what it cost him ; how much did he gain ? 3. If 7 men can do a piece of work in 4£ days, how long will it take 1 man to do it ? How long...will it take 3 men to do it ? 4. If 4 men can do a piccf of work in 9J days, how long would it take to do it if 7 men were em ployed ? « , 5. There is...

Intellectual Arithmetic: Upon the Inductive Method of Instruction

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Intellectual Arithmetic, Upon the Inductive Method of Instruction

Warren Colburn - 1836 - 172 σελίδες
...quantity of flour for 53f dollars, and sold it for f of what it cost him ; how much did he gain ? , 3. If 7 men can do a piece of work in 4f (Mays, how long will it take 1 man to do it ? How long will it take 3 men to do it ? 4. If 4 men can...

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