Blue Computing Company purchased some property, plant and equipment (PPE) on January 1, 2018. The PPE cost $5,000,000 and has an estimated salvage value of $100,000. The useful life is 5 years. The units produced by the PPE will be: 2018, 50,000 units; 2019, 100,000 units; 2020, 100,000 units; 2021, 75,000 units; 2022, 25,000 units. Please answer the following questions about this PPE. 4. The net book value, at the end of 2021, under the units of production method, is: Soo $575,000 $100,000 $350,000 $450,000 5. The depreciation expense, for 2022, under the units of production method, is: Soo $350,000 $357,143 $275,000 $415,133 9. Green Company sold an old printing press. The original cost was $250,000 and the accumulated depreciation was $215,000. The loss on the sale of PPE was $18,000. How much cash was received? soo $18,000 $17,000 $250,000 $35,000