Question 1092704
Let {{{ x }}} = ounces of pure supergrow to be added
{{{ ( .12*( 32 - x ) + x ) / 32 = .175 }}}
{{{ .12*( 32 - x ) + x = 5.6 }}}
{{{ 3.84 - .12x + x = 5.6 }}}
{{{ .88x = 1.76 }}}
{{{ x = 2 }}}
He should add 2 ounces of pure supergrow
to the 12% solution
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check:
{{{ ( .12*( 32 - x ) + x ) / 32 = .175 }}}
{{{ ( .12*( 32 - 2 ) + 2 ) / 32 = .175 }}}
{{{ ( .12*30 + 2 ) / 32 = .175 }}}
{{{ ( 3.6 + 2 ) / 32 = .175 }}}
{{{ 5.6 = 5.6 }}}
OK