Answer:
The 48 oz container is a better buy.
Explanation:
6.50/64 = 0.1015625
4.25/48 = 0.08854166666
The 64 oz container costs approx $0.10 per ounce. The 48 oz container costs $0.09 per ounce. The 48 oz container is a better buy because it costs less per ounce.