Question 439563
Let {{{x}}} = % of milk in final mixture
In words:
(total liters of milk) / (total liters of mixture) = % milk
given:
Liters of milk = {{{.2*4 = .8}}}
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{{{ .8/(1 + 4) = x }}} 
{{{ 5x = .8 }}}
{{{ x = .8/5 }}}
{{{ .8/5 = 16/100 }}}
There is 16% milk in the new mixture