If Linas had NOT sold the ppe to Asta, Linas would have charged one more year’s worth of depreciation on the item of plant that had cost $200,000 and was being depreciated over its useful life of 5 years.
At the time of sale to Asta, there were 2 remaining years of estimated useful life, so Linas would have charged $40,000
As it was, Linas DID sell the plant to Asta for $90,000 and Asta will have charged depreciation for 1 year on the plant over its estimated remaining useful life of 2 years so will have charged $45,000