I'm trying to create a if then statement in excel. My result is going in
column P, I want the value of column O to be tested.

I have three values in column O 25, 17 and 15.

If O3 = 17, then P3=the value in m3,
If O3 = 25, then P3=the value in I3,
If O3 = 15, then P3=the value in N3

I've tried for days to figure this out and don't remember all the ways I've
tried to get it to work. Since there is one of the three values in this
Column O, I don't need a final statement. but I guess maybe this is my
mistake. The formula will always net a result since I have one of the three
values in row O.
=IF(O3=17,P3=M3,IF(3="25",P3=I3,IF(O3="15",P3=N3)) )