If one store is selling 3/4 of a bushel of apples for 9$, and another store is selling 2/3 of a bushel of apples for 9$, which store has the better deal? Explain your answer

The one selling 3/4 of a bushel for $9. This is not only because the quantity is higher for the same price at both stores, but also because the unit price of the first bushel is cheaper than the unit price of the second bushel.