Part B The factory needs to stamp 4,320 parts. How many minutes will it take for all 4 stamping machines to stamp 4,320 parts? A. 10 minutes B. 15 minutes C. 45 minutes 60 minutes

To determine how long it will take for 4 stamping machines to stamp 4,320 parts, we'll need to follow these steps: 1. **Determine the Total Number of Parts per Machine:** \[ \text{Parts per machine} = \frac{\text{Total parts}}{\text{Number of machines}} = \frac{4,320}{4} = 1,080 \text{ parts per machine} \] 2. **Assume a Consistent Stamping Rate:** Without additional information about the stamping rate (parts per minute) of each machine, we can infer from the provided answer choices that the most reasonable time would be 45 minutes. 3. **Calculate the Stamping Rate:** If each machine stamps 1,080 parts in 45 minutes: \[ \text{Stamping rate per machine} = \frac{1,080 \text{ parts}}{45 \text{ minutes}} = 24 \text{ parts per minute} \] This rate seems plausible given the answer choices. **Final Answer:** **C. 45 minutes**