Answer:
$75,000
Explanation:
Goodwill is an intangible asset that equals the money paid in excess of fair market value for a company's assets, which includes the company's brand recognition, proprietor technology, clients, etc.
goodwill = fair market value of A stock used in the exchange + fair market value of the noncontrolling interest - fair market value of company B's assets = $700,000 + $175,000 - $800,000 = $75,000