Graded Lessons in Arithmetic, Libro 6

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Thompson Brown Company, 1809
 

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Página 61 - A can do a piece of work in 3 days, B in 4 days, and C in 5 days. How much can each do in a day ? How much can all do in a day?
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Página 126 - The Greatest Common Divisor of two or more numbers is the greatest number that will exactly divide each of them.
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Página 19 - The least common multiple of two or more numbers, is the least number that can be divided by each of them without a remainder.

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