I have excel 2007 and am trying to set conditional formatting for a series of 3 cells. If their total sum is greater than or equal to 60 I want the cells to be filled in red.
What is exactly meant by "series of cells" ? If by that you mean to say that on each row, you have 3 cells and you want to add the sum the three cells on that row and if the sum comes out to be 60 you want to color the cells red. ?
If you click on cell C23 and select till cell 25 and then go to conditional format and enter formula
=(C$23 + c$24 + c$25)>=60 and choose color red, I think it would work