Question 897689
The 1st report took {{{ 1/3 }}} hr
The next two reports took {{{ 1/6 }}} and {{{ 1/4 }}} hr
{{{ 1 - ( 1/3 + 1/6 + 1/4 ) }}} is the time left
{{{ 12/12 - 4/12 - 2/12 - 3/12 }}}
{{{ 12/12 - 9/12 }}}
{{{ 3/12 = 1/4 }}}
1/4 of an hour is left