1. **State the problem:** Walmart charges a delivery fee of 3% of the total grocery bill. We need to find the total price including the delivery fee for groceries worth 140. 2. **Formula used:** The total price including delivery fee is given by: $$\text{Total Price} = \text{Original Price} + \text{Delivery Fee}$$ where $$\text{Delivery Fee} = \text{Original Price} \times \text{Delivery Rate}$$ 3. **Calculate the delivery fee:** $$\text{Delivery Fee} = 140 \times 0.03 = 4.2$$ 4. **Calculate the total price:** $$\text{Total Price} = 140 + 4.2 = 144.2$$ 5. **Answer:** The total price charged by the store including delivery is **144.2**.