Talk:FGO Summer 2018 Event (US)/@comment-35270571-20180729074207/@comment-26180564-20180729180210

Rate Up means that the servants in Rate Up have a 70% chance of spawning within their brackets.

The SR Servant Bracket is 3%.

0.03 x 0.70 = 0.021 = 2.1%

When there are 3 Rate Up SR Servants, 2.1% / 3 = 0.7% per Servant.

When there is 1 Rate Up SR Servant, that servant will have 2.1%, and the rest will have to share the remaining 0.9%, split equally between them and the regular SR servants.