Question 1094062
You could make a chart or table if you want.


Without a table of data,

x, volume of the 50% juice
12-x, volume of the 20% juice


12 gallons of 40% juice is wanted.


{{{(50x+20(12-x))/12=20}}}

OR

{{{50x+20(12-x)=12*20}}}


Solve for x and evaluate 12-x.