Final answer:
Northern paid $100,000 in goodwill for the acquisition of Southern, which is calculated by subtracting the fair value of Southern's net assets from the purchase price.
Step-by-step explanation:
To calculate the amount of goodwill Northern paid for acquiring Southern, we start with the purchase price of the entire business and subtract the fair value of Southern's net assets (assets minus liabilities) at the time of acquisition. The fair value of Southern's net assets is calculated as follows:
Fair value of assets: $800,000
Fair value of liabilities: $300,000
Net assets fair value: $800,000 - $300,000 = $500,000
Therefore, the goodwill paid by Northern is:
Purchase price: $600,000
Net assets fair value: $500,000
Goodwill: $600,000 - $500,000 = $100,000