Question 754362
I can pick any number for the Son's salary 
to compare the both, so I will say that
Son's salary = {{{ 1 }}}
Father's salary = {{{ 1.2 }}}
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The Son's salary is what per cent of the Father's?
{{{ ( 1/1.2)*100 = 100/1.2 }}}
{{{ 100/1.2 = 83.333 }}}
The Son's salary is 83 1/3 % of the Father's