calculate the total room days 620924

Calculate the total room days:

1. Single rooms 20
2. Double rooms 30
3. Occupancy ratio:

During summer	30 weeks
Single	100 per cent
Double	90 per cent
During winter	22 weeks

Single room and double room 50 per cent

For the purpose fixing rentals with regard to the space and facilities, the double room shall be regarded 1 1/2 of the single room.