Question 891917
Let {{{ p }}} = the cost of the pair of pants
{{{ (3/4)*p }}} = the cost of the shoes
{{{ 2p }}} = the cost of the sweater
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{{{ p + (3/4)*p + 2p = 12500 }}}
{{{ p*( 1 + 3/4 + 2 ) = 12500 }}}
{{{ p*( 12/4 + 3/4 ) = 12500 }}}
{{{ ( 15/4 )*p = 12500 }}}
{{{ 15p = 50000 }}}
{{{ p = 3333.33 }}}
{{{ (3/4)*p = 2500 }}}
{{{ 2p = 6666.67 }}}
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The cost of the pair of pants is $3,333.33
The cost of the shoes is $2,500
The cost of the sweater is $6,666.67 
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check:
{{{ 3333.33 + 6666.67 + 2500 = 12500 }}}
OK