Question 1080262
In the 4 pints of green paint, there are
2 pints of blue and 2 pints of yellow
Let {{{ x }}} = pints of yellow that need to be added
to make mixture 80% yellow
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{{{ ( 2 + x ) / ( 4 + x ) = .8 }}}
{{{ 2 + x = .8*( 4 + x ) }}}
{{{ 2 + x = 3.2 + .8x }}}
{{{ .2x = 1.2 }}}
{{{ x = 6 }}}
6 pints of yellow need to be added
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check:
{{{ ( 2 + x ) / ( 4 + x ) = .8 }}}
{{{ ( 2 + 6 ) / ( 4 + 6 ) = .8 }}}
{{{ 8/10 = .8 }}}
{{{ .8 = .8 }}}
OK
Just explain the equation