Two typists

There are two typists who are rewriting the material 814 pages. First can it handle rewrite yourself for 24 days; the second 12 days. First typist wrote material yourself 4 days rest rewrites yourself second typist. How many days will it take rewriting altogether?

Correct result:

x =  14 d


1=1244+112y y=(1424)12 y=10  x=4+y=4+10=14 d

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