 ... can do a certain job in 3 hours, while the same job takes В 4 hours. How long will it take both of them working together? [Hint: If x — number of hours for both to complete the work, I/x will be the amount of the work done by both in 1 hour.] 46.  Algebra, by Maximilian Philip - Σελίδα 28των Maximilian Philip - 1916 - 201 σελίδεςΠλήρης προβολή - Σχετικά με αυτό το βιβλίο
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