Question 1157198
Let {{{ x }}} = his monthly salary
{{{ x - 1188 = (1/5)*x + (1/8)*x }}}
{{{ x - 1188 = ( 8/40 + 5/40 )*x }}}
Multiply both sides by {{{ 40 }}}
{{{ 40x - 47520 = 13x }}}
{{{ 27x = 47520 }}}
{{{ x = 1760 }}}
$1,760 monthly salary
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check answer:
{{{ x - 1188 = (1/5)*x + (1/8)*x }}}
{{{ 1760 - 1188 = (1/5)*1760 + (1/8)*1760 }}}
{{{ 572 = 1760*( .2 + .125 ) }}}
{{{ 572 = 1760*.325 }}}
{{{ 572 = 572 }}}
OK