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.
Re: How old does something have to be to be called Vintage? The brief answer to your question is that ANYTHING is vintage something Anything made is Vintage WHENEVER It Was Made -- be that during the depression, post-war whenever, the Eisenhower years, and the cake you made yesterday is Vintage 4/3/13. Legally, an antique in this country must be 100 years old. Period.