Answer:
$550,000
Step-by-step explanation:
Based on the information given the OPPORTUNITY COST OF RUNNING THE HARDWARE STORE will be $550,000 ($500,000+$50,000), which include the amount of $500,000 which is the cost of renting the store as well as to the cost to buy the stock while the $50,000 is her salary as an Accountant, reason been that she would QUIT HER JOB as an accountant in order for her to run the store.
Therefore the OPPORTUNITY COST will be $550,000