9514 1404 393
Answer:
481.5 (rounded to tenths)
Explanation:
Boxes are proportional to packing, so we have ...
(pounds of boxes)/(pounds of packing) = b/260 = 100/54
Multiplying by 260 gives ...
b = 260(100/54) = 26000/54 = 481.481481...
About 481.5 pounds of boxes were used.