Average revenue (AR), is revenue per unit, and is found by dividing TR by the quantity sold, Q. AR is equivalent to the price of the product, where P x Q/Q = P, hence AR is also price. Marginal revenue (MR) is the revenue generated from selling one extra unit of a good or service.
Unused hearing aid batteries lose about 3% of their capacity every year. Batteries do fade; this is true across all battery brands. After year 4 the battery should have about 85-88% of its original capacity. Perforations will not occur. While the steel we use is thin, it has a lot of support underneath.
PerfectDry LUX uses heat to dry the aids out, are suitable for all types hearing aids and can easily fit 2 hearing aids at a time. 1  Electric fan for maximum moisture removal. 2  optimized performance:cycle time only 30min. 3  360Â° UV-C for effective disinfection.  Destroys 99% of micro- 1 organisms. Maximum temperature of 40Â° C. USB or mains power supply.