Call the amount that one container could hold, x......so.... 2x fills both containers, and she uses (1/2)x + (3/4)x = (5/4)x and has 255g left....so....
Amt remaining + amt used = amt in both containers
255 + (5/4)x = 2x simplify
255 = (3/4)x multiply both sides by (4/3)
340 = x
So 2(340) = 680g and that's how much sugar was in the packet
te iubesc <3 <3 <3
