Sandy pitcher can hold 320 onces of lemonade or 20 gallons. You can figure this out by simply by doing 64•2+ 48•4. You would do sixty-four times two witch is 128. You would do this because she has two pitches that hold 64 onces of lemonade. You would then do forty-eight times four witch is 192. You would do this because she has four pitchers that hold 48 onces of lemonade. Then finally you would add them( 128+192=320). You would do this final step because you want to find the total number of ounces of lemonade she can have in pitchers at once. I hope this explanation was useful to you so that you know how to do it when test day comes.