Answer:
$720,000
Step-by-step explanation:
Calculations of change in net income of 2021 due to change to LIFO method
Net income = Net income as per FiFO method - (Inventory as per FIFO - Inventory as per LIFO)
Net income = $780,000 - ($390,000 - $330,000)
Net income = $780,000 - $60,000
Net income = $720,000
Therefore, a change to the LIFO method in 2021 would result in net income for 2021 of $720,000.