Question 7844
{{{5/9}}}+{{{7/9}}}
={{{12/9}}}
=1 {{{3/9}}}
=1 {{{1/3}}}


There are 60 minutes in an hour.  Since we want to know what {{{1/3}}} of an hour is, divide 60 by 3:
{{{(60)(1/3)}}}
=20 min

1 {{{1/3}}}= hour and 20 min


Ralph spends 1 hour and 20 minutes on his project.