Question 1131276
Let {{{ x }}} = pounds of cashews needed
{{{ ( 2*10 + 5x ) / ( 10 + x ) = 3 }}}
{{{ 20 + 5x = 3*( 10 + x ) }}}
{{{ 20 + 5x = 30 + 3x }}}
{{{ 2x = 10 }}}
{{{ x = 5 }}}
5 pounds of cashews are needed
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check:
{{{ 2*10 + 5*5 = 20 + 25 }}}
{{{ 20 + 25 = 45 }}} dollars if sold separately
and
{{{ 3*( 10 + x ) }}}
{{{ 30 + 3*5 }}}
{{{ 45 }}} dollars if sold in mixture