The "Panorama" hotel has 30 single and 130 double rooms. On Saturday 7/15, 256 customers stayed overnight at the hotel, with 85% room occupancy, and on Sunday 7/16, 144 guests stayed overnight, with 55% room occupancy. The average price per customer on Saturday 15/7 was 63, while the average price per customer on Sunday 16/7 was 67.

Based on the above data, calculate separately for Saturday 15/7 and for Sunday 16/7, the following:

a) The customers per rental room, b) The occupancy of beds, c) The revenue of overnight stays, d) The average price per available room, e) The number of rented rooms.