Team A developed a wind tunnel that will be used for the next 10 years at 50M (base cost). What is asked of you is to choose the most suitable method of depreciation. Using this wind tunnel, Team A will generate 25M net income per year over the next 10 years. At the end of 10 years, the second hand price of this tunnel (SV = 0) was planned as zero. You can apply this wind tunnel with sum-of-the-years-digits or Declining Balance% X switch to Straight Line (Declining Balances by X% - Transition to Straight Line) (X% for Declining Balances, as we used in our course, a value like 200% 150%). In both methods, your depreciation period will be 10 years. What is the value of X if Team A' MARR is 10% and Team A is unstable between the two alternatives (the benefits from both depreciation methods are the same)?