Complete the table with the number of sit-ups you have to do sunday so that the mean number of sit-ups per day is 100 monday- 100 tuesday- 65 wednesday-120 thursday-150 friday- 90 saturday-0 sunday- ? ?

The complete table will be:

Explanation

Suppose, the number of sit-ups in Sunday is

Mean is the simple average of some numbers. For finding the mean number of sit-ups per day, we need to divide the 'total number of sit-ups' by the 'total number of days'.

Here the total number of days is 7 and the total number of sit-ups for 7 days

Given that, the mean number of sit-ups per day is 100. So, the equation will be...

So, the number of sit-ups you have to do Sunday is 175.

1/4 because there is 4 grades.