Question 994302
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{{{1/12}}} + {{{1/15}}} = {{{5/60}}} + {{{4/60}}} = {{{9/60}}} = {{{3/20}}}.


This part of  5  pounds of apples Isabel and John can peel together in  1 (one) minute:  {{{3/20}}}  of  5 pounds per minute.


Hence,  it will take  {{{20/3}}} = {{{6}}}{{{2/3}}}  minutes,  or  6 minutes and  40   seconds,  for Isabel and John to peel  5  pounds of apples if they will work on it together.


For more problems on joint work 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.


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