current machine is also provided. a. Based on the NPV of the cash flows for these 5 years, which machine should MKM International purchase? Assume a discount rate of 13 percent. Assuming a discount rate of 13 percent, MKM International should purchase because the NPV of machine 1 is $ and the NPV of machine 2 is $ (Enter your responses rounded to the nearest whole number.) b. If MKM International lowered its required discount rate to 7 percent, what machine would it purchase? Assuming a discount rate of 7 percent, MKM International should purchase because the NPV of machine 1 is $ and the NPV of machine 2 is $ (Enter your responses rounded to the nearest whole number.)