6-4. A small family-owned and operated orchard sells apples and cider daily during
the fall. On a particular day in October, the store processing facility receives 300
bushels of unsorted apples. Each bushel of apples is transported in a wooden crate.
Crates weigh 4 lbs each, and a bushel of apples weighs 40 lbs.
Also delivered to the store are containers in which the apples and cider will be sold:
for the apples, 500 one-bushel cardboard boxes with a total weight of 100 lbs,
and for the cider, 200 one-gallon plastic jugs with a total weight of 20 lbs. As the