Part A is correct, I need help in part B

The cash flows for two investment projects are as given in the table below. Click the icon to view the interest factors for discrete compounding when i = 12% per year. Click the icon to view the interest factors for discrete compounding when i = 15% per year. For project A. find the value of X that makes the equivalent annual receipts equal the equivalent annual disbursement at i = 15%. (Round to the nearest dollar.) For A to be preferred over project B. determine the minimum acceptable value of X in year 2 at i = 12% based on an AE criterion. The minimum acceptable value of X is $ 16. (Round up to the nearest dollar.)