Question

Please help. i really need it.

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- ?

Answer 1

175 sit-ups were done on Sunday because 100*7 is 700, and if you add up Monday-Saturday, you get 525, but in order for the mean to be 100, you must subtract 700 from 525 to get 175.