1. **State the problem:** Mary is baking 3 pies. Each pie takes 50 minutes to bake. 2. **Given times:** - Pie 1 starts at 2:00 pm - Pie 2 starts at 2:17 pm - Pie 3 starts at 2:50 pm 3. **Find:** - The time each pie finishes baking - The total baking time for all 3 pies combined 4. **Calculate finishing times:** - Pie 1 finishes at $2:00\text{ pm} + 50\text{ min} = 2:50\text{ pm}$ - Pie 2 finishes at $2:17\text{ pm} + 50\text{ min} = 3:07\text{ pm}$ - Pie 3 finishes at $2:50\text{ pm} + 50\text{ min} = 3:40\text{ pm}$ 5. **Determine when all pies are done:** The last pie finishes at $3:40\text{ pm}$, so all pies are done by then. 6. **Calculate total baking time:** Total baking time is the sum of baking times for all pies: $$50 + 50 + 50 = 150\text{ minutes}$$ 7. **Summary:** - All pies are done at **3:40 pm**. - Total baking time for all pies is **150 minutes** (or 2 hours and 30 minutes).