Question 714677
Let {{{ x }}} = amount invested @ 4%
{{{ 42000 - x }}} = amount invested @ 10%
given:
{{{ .04x = .1*( 42000 - x ) }}}
{{{ .04x = 4200 - .1x }}}
{{{ .14x = 4200 }}}
{{{ x = 30000 }}}
{{{ 42000 - 30000 = 12000 }}}
$30,000 should be invested @ 4%
$12,000 should be invested @ 10%
check:
{{{ .04x = .1*( 42000 - x ) }}}
{{{ .04*30000 = .1*12000 }}}
{{{ 1200 = 1200 }}}
OK