IDK what I'm doing wrong as it Allllmost works. 
Trying to create a formula to say, If you look at this overall score... 
if it's 0 - 54 = Tier 3
If it's 55 - 90 = Tier 2
If it's 91 and beyond = Tier 3
I'm using this formula... it works except it won't display tier 3... 
=IF(Answer21 < 55, "Tier 3", IF(Answer21 > 54, "Tier 2", IF(Answer21 > 91, "Tier 1")))
What am I missing? 
Thank you!!