Final answer:
The ratio of mashed bananas to quick oats in the cookie recipe is (2)/(3):1, or equivalently, 2:3 when scaled to have the same denominator.
Step-by-step explanation:
The ratio of mashed bananas to quick oats in the recipe is found by comparing the quantities of each ingredient. The recipe calls for (2)/(3) cup of mashed bananas and 1 cup of quick oats.
To express this as a ratio, we write the amount of bananas over the amount of oats, which results in a ratio of (2)/(3):1, which can also be expressed as 2:3 when both quantities are scaled to have the same denominator.
The ratio of mashed bananas to quick oats in the recipe is 2:3. This means that for every 2/3 cup of mashed bananas, 1 cup of quick oats is used.