Martina conducts a survey at her university and finds that out of 150 students 100 are women, all of whom participate in either sports or academic clubs. She learns that of those 100 women, 50 participate in academic clubs and 70 women participate in sports clubs. How many women participate in both sports and academic clubs?

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