You operate a bicycle rental shop near Stanley Park during July and August. The of bikes rented per day depends on the weather. On a warm sunny day you average 35 bike rentals, on a cloudy day you average 15 rentals , and on a day when it rains you average only 5 bike rentals. Based upon historical data you that typically during the summer , there is 60% chance when it is sunny; 25% chance when it is cloudy and it rains the rest of the time. If you charge $ 50 per day to rent a bike, how much is your expected revenue per day