Question 999006
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See the lesson &nbsp;<A HREF=http://www.algebra.com/algebra/homework/Rate-of-work-word-problems/Word-problems-WORKING-TOGETHER-by-Fractions.lesson>Using fractions to solve word problems on joint work</A>&nbsp; in this site, &nbsp;where the similar problems were solved. 

Start with the &nbsp;<B>Problem 1</B>&nbsp; of this lesson and read it attentively. &nbsp;Then substitute your data.


Good luck!