Question 764346
Let {{{ t }}} = time vet spent making house calls
{{{ 2t }}} = vets time spent tending animals
{{{ 1 }}} hours spent eating lunch, so vet worked
{{{ 8 - 1 = 7 }}} hrs/day
---------------------
{{{ t + 2t = 7 }}}
{{{ 3t = 7 }}}
{{{ t = 7/3 }}} hrs
{{{ t = 2 + 1/3 }}}
convert {{{ 1/3 }}} hr to minutes
{{{ (1/3)*60 = 20 }}} min
The vet spent 2 hrs and 20 min making house calls
check:
{{{ t + 2t = 7 }}}
{{{ 7/3 + 2*(7/3 ) = 7 }}}
{{{ 7/3 + 14/3 = 7 }}}
{{{ 21/3 = 7 }}}
{{{ 7 = 7 }}}
OK