At the beginning of 2019, Metatec Inc. acquired Ellison Technology Corporation for $600 million. In addition to cash, receivables, and inventory, the following assets and their fair values were also acquired: Plant and equipment (depreciable assets) $ 150 million
Patent 40 million
Goodwill 100 million

The plant and equipment are depreciated over a 10-year useful life on a straight-line basis. There is no estimated residual value. The patent is estimated to have a 5-year useful life, no residual value, and is amortized using the straight-line method.

At the end of 2021, a change in business climate indicated to management that the assets of Ellison might be impaired. The following amounts have been determined:

Plant and equipment:
Undiscounted sum of future cash flows $ 80 million
Fair value 60 million
Patent:
Undiscounted sum of future cash flows $ 20 million
Fair value 13 million
Goodwill:
Fair value of Ellison Technology Corporation $ 450 million
Book value of Ellison’s net assets (excluding goodwill) 370 million
Book value of Ellison’s net assets (including goodwill) 470 million*
*After first recording any impairment losses on plant and equipment and the patent.

Required:
1. Compute the book value of the plant and equipment and patent at the end of 2021.
4. Determine the amount of any impairment loss to be recorded, if any, for the three assets.