A student recorded the number of minutes they spent reading each night for one week:
| Night | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|---|
| Minutes | 30 | 45 | 20 | 35 | 50 | 60 | 40 |
What was the mean number of minutes the student spent reading per night during the week?
35
40
45
50
