Question 1157076
g of 100%
30-g of 70%

{{{100g+70(30-g)=80*30}}}

-

{{{100g-70g+70*30=80*30}}}
{{{g(100-70)=30(80-70)}}}
{{{highlight_green(g=30((80-70)/(100-70)))}}}

{{{g=30(1/3)}}}

{{{highlight(g=10)}}}