Efficiency = input / output If expenses are $60 and revenue is $80 (perhaps net of interest revenue/expense) the efficiency ratio is 0.75 or 75% (60/80) â meaning that $0.75 are spent for every dollar earned in revenue.
As mentioned above a true antique is more than 100 years old, but some stores value furniture older than 50 years as antique and fine antique dealers will label items antique if they are more than 150 years old. The best way to find out is get the exact age of the piece.
Relevance. Rating Newest Oldest. Best Answer: For furniture to be considered antique it needs to be 100 years old, however if you are collecting pieces that you hope will become increasingly valuable you do not necessarily need to buy authentic antiques. Many antiques are less valuable than pieces from the 1940âs to 1960âs.