Question 618966
Let the number of shirts he buys = {{{ n }}}
So he pays {{{ 120*(n/5) = 24n }}} dollars
His total income from selling them is {{{ 30n }}}
His profit is:
{{{ 30n - 24n }}}
For a profit of 1200,
{{{ 30n - 24n = 1200 }}}
{{{ 6n = 1200 }}}
{{{ n = 200 }}}
He must sell 200 shirts for a profit of $1200