Final answer:
To find the average number of readers on other days, subtract the number of readers on Sunday and Saturday from the weekly attendance.
Step-by-step explanation:
To find the average number of readers on other days, we first need to find the total number of readers on Sunday and Saturday. To find the average number of readers on other days, subtract the number of readers on Sunday and Saturday from the weekly attendance.
Adding the number of readers on Sunday and Saturday:
540 + 630 = 1170
To find the average number of readers on other days, we subtract the number of readers on Sunday and Saturday from the weekly attendance:
310 - 1170 = -860
Since we can't have a negative number of readers, the average number of readers on other days is 0.