Help to solve a problem please: The pool is filled through the first pipe in 4 hours, and through another in 6 hours What part of the pool will need to be narolnit in 2 hours of a joint rpbota of both pipes (pool volume princht for 1 to replace multiplication of fraction addition) I thank In advance

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1) 1: 4 = 1/4 pools - will be filled 1ya by a pipe for 1 Part 2) 1: 6 = 1/6 pools - will be filled by the 2nd pipe for 1 Part 3) 1/4 + 1/6 = 3/12 + 2/12 = 5/12 - the performance of both pipes for 1 Part 4) 5/12 + 5/12 = 10/12 = 5/6 pools will fill both pipes for 2 h (to replace it instead of 5/12 * 2 = 10/12 = 5/6) 5) 1 - 5/6 = pool 1/6 - it will be necessary to fill in 2 h collaboration of both pipes.
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Answer add