The marketing department of Giggo Hotels has estimated the number of hotel rooms (it has 120) that could be sold at different price levels. This information is shown below:

Number of rooms sold

Price per room per night (£)

120

90

100

105

80

135

60

155

50

175

Giggo Hotels has estimated its variable costs at £25 per room per night. Calculate the occupancy rate that Giggo will need in order to maximize its profits.