The Average Daily Rate ratio, often used by outsiders as an evaluation of how much revenue is earned each day, is usually calculated on the basis of how many days?

A. 365 days 
B. 30 days 
C. Number of days a child care facility is open 
D. 360 days

A.

To calculate the Average Daily Rate (ADR) ratio, you need to determine the number of days over which the revenue is being measured. The most commonly used basis for this calculation is usually 365 days. Therefore, the correct option is A.

The Average Daily Rate ratio is usually calculated on the basis of 365 days.