An Algebra for Secondary Schools

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 Excerpt: ... years. Find the amount of the investment and the rate of interest. 20. A, B, and C are at various times engaged to do certain equal pieces of work. B and C together complete the work in 2 hours; C and A in 1 hours; A and B in 1 hours. In what time can each do the work alone, and in what time can all three do the work? ...

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