Sir, I also have another question, the next question is asking for the new RI for Dugaldo, but why is it using incremental profit not directly adding the old and new to find the new RI to be compared with the old RI?
Here is the answer: Profit from proposal = (60,000 – 15,000) = 45,000 Existing profit = (60,000 – 25,000) = 35,000 Incremental profit 10,000 Imputed interest = 12% × 75,000 (9,000) Incremental RI (Positive so accept) 1,000