Question 1186117
p ounces of 70%
5-p ounces of 20%
5 ounces of mixture at 40%


{{{highlight_green(70p+20(5-p)=40*5)}}}


{{{70p-20p+20*5=40*5}}}

{{{(70-20)p=40*5-20*5}}}

{{{highlight_green(p=5((40-20)/(70-20)))}}}---------simplify and compute,...

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2 ounces of 70% and 3 ounces of 20%