I need help with problem P6-6B in Financial Accounting:

You have the following information for Limex Watches. Limex uses the periodic method of accounting for its inventory transactions. Limex carries only one brand of hand-crafted jeweled watches-all are identical.

Each batch of watches purchased is carefully coded and marked with its purchased cost.

a. Assume that Limex uses the specific identification cost flow method.

1. Demonstrate how Limex could maximize its gross profit for the month by specifically selecting which watches to sell on 7/5 and 7/28