First, the total mass of candies in 78 containers is  78*25 = 1950 pounds,

        which is enough to fill  600 3-pound bags:  600*3 = 1800, which is less than 1950 pounds.



Second, the required number of boxes is   = 54.17,  or at least 54 full boxes,

        while this women has only 30 boxes, which is not enough to complete the packaging process.