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.
1 The definition of classic car is actually quite similar to that of antique cars. 2  A car must be at least 20 years old, but not more than 40 years old to be considered a classic car. 3  It should again have been repaired and maintained in a way that keeps it true to its original design and specifications. For that reason they set rules stating what qualifies as antique.. 2  In most cases it is a car that's over 45 years old. 3  Generally the car should be maintained in a way that keeps it true to the original manufacturer specifications. 4  Classic car.