Average Times Exercised Per Week

A local gym conducted a survey among its members to find out how many times a week they exercise. The results are summarized in the table below:

Number of Times per Week | Number of Members

1 | 10

2 | 20

3 | 25

4 | 15

5 | 5

Based on this data, what is the average number of times per week that the gym members exercise?