five year ago a consulting engineer purchased a building for company offices    constructed of bricks that were not properly fired. As  a result some of the bricks were deteriorated from their exposure  to rain and show. because of the problem with the bricks the selling price of the building was 25% below the price of comparable structurally sound building. The engineer repaired the damaged bricks and arrested further deterioration by applying an extra strength solvent based RTV elastomeric sealant. This resulted in restoring the building to its fair market value. if the depressed purchase price of the building was 600000 and the cost of getting it repaired was 200000 , what is the equivalent  value of the "forced appreciation" today , if the interest rate is 8%  



คำว่า "forced appreciation" คืออะไร?