Question 644170
Let {{{ x }}} = amount invested at 7%
{{{ x + 1700 }}} = amount invested at 11%
given:
{{{ .07x + .11*( x + 1700 ) = 835 }}}
{{{ .07x + .11x + 187 = 835 }}}
{{{ .18x = 835 - 187 }}}
{{{ .18x = 648 }}}
{{{ x = 3600 }}}
{{{ x + 1700 = 5300 }}}
She invested $3600 at 7% and $5300 at 11%
check:
{{{ .07*3600 + .11*( 3600 + 1700 ) = 835 }}}
{{{ 252 + .11*5300 = 835 }}}
{{{ 252 + 583 = 835 }}}
{{{ 835 = 835 }}}
OK