Question 899333
Let {{{ x }}} = ounces of 32% solution needed
{{{ .32x }}} = ounces of acid in 32% solution
{{{ .17*32 = 5.44 }}} ounces of acid in 17% solution
--------------------
{{{ ( .32x + 5.44 ) / ( x + 32 ) = .2 }}}
{{{ .32x + 5.44 = .2*( x + 32 ) }}}
{{{ .32x + 5.44 = .2x + 6.4 }}}
{{{ .12x = .96 }}}
{{{ x = 8 }}}
8 ounces of 32% solution are needed
------------
check:
{{{ ( .32x + 5.44 ) / ( x + 32 ) = .2 }}}
{{{ ( .32*8 + 5.44 ) / ( 8 + 32 ) = .2 }}}
{{{ ( 2.56 + 5.44 ) / 40 = .2 }}}
{{{ 8/40 = .2 }}}
{{{ 8 = .2*40 }}}
{{{ 8 = 8 }}}
OK