1. **State the problem:** Aling Rosa spent 91.80 pesos on ingredients and fuel to cook ginataan. She sold the ginataan to 32 customers, each paying 4.50 pesos. We need to find how much she gained from her enterprise. 2. **Formula used:** Gain (Profit) = Total Revenue - Total Cost 3. **Calculate total revenue:** $$\text{Total Revenue} = 32 \times 4.50 = 144$$ 4. **Calculate gain:** $$\text{Gain} = 144 - 91.80$$ 5. **Simplify the gain:** $$\text{Gain} = 144 - 91.80 = 52.20$$ 6. **Interpretation:** Aling Rosa gained 52.20 pesos from her enterprise after covering the cost of ingredients and fuel. **Final answer:** Aling Rosa's gain is **52.20** pesos.