Each light bulb at hotel california is either incandescent or fluorescent. at a certain moment, forty percent of the incandescent bulbs are switched on, and ninety percent of the fluorescent bulbs are switched on. if eighty percent of all the bulbs are switched on at this moment, what percent of the bulbs that are switched on are incandescent? a. 22 (2/9)%b. 16 (2/3)%c. 11 (1/9)%d. 10%e. 5%

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes