In a club, there are four interest groups: Sports, Music, Gymnastics and Drama. Each member is in one and only one interest group. The pie chart represents the numbers in each group. a) There are 80 members in the sports group. Calculate the total membership of the club.
b) What percentage of the total membership are in the Sports group?
c) There are 48 members in the Drama group. Calculate the size of the angle marked x°.
d) Calculate the number of members in the Gymnastics.​

Answer question above and explain each step : )

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

Jane’s favorite fruit punch consists of pear, pineapple, and plum juices in the ratio 5: 2: 3. how many cups of pear juice should she use to make 20 cups of punch?