Question 738540
{{{2}}} hours-- {{{25}}} minutes------------{{{0}}} seconds
{{{0}}} hours--{{{45}}} minutes ------------{{{0}}} seconds
{{{3}}} hours---{{{0}}} minutes------------ {{{27}}} seconds 
{{{1}}} hours-- {{{5}}} minutes------------ {{{40}}} seconds..........add
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{{{2+0+3+1}}}hours {{{25+45+0+5}}}minutes {{{0+0+27+40}}} seconds 


{{{6}}}hours {{{75}}}minutes {{{67}}} seconds .......{{{75}}}minutes={{{1}}} hour and {{{15}}}minutes


{{{6+1}}}hours {{{15}}}minutes {{{67}}} seconds.......{{{67}}}seconds={{{1}}} minute and {{{7}}}seconds


{{{6+1}}}hours {{{15+1}}}minutes {{{7}}} seconds


{{{7}}}hours {{{16}}}minutes {{{7}}} seconds........is the total