Since the recode, nearly all bonuses are additive, and friend points fall into this category.
In other words:
J Diddy +400%
Tic Tac +400%
Total +800%
- Of course, realize that you are splitting the total amount between the number of friends.
Other items that affect this:
Love Love Paradise +100%
Rack On The Rocks (Juice Bar), +5% per each up to stacks up to 12 times* or +10% up to 12 times with Drunken Fist Theme activated also.
The Ninja-Mas Spirit Jutsu +100%
Running Man +400* (Girl Power Team only)
Themes:
Battle of Champions: +100%
Good Night Ninja +1250 - NON MISSION, given at end of day, NOT divided
Example: When I was running missions for The Tote, I had J-Diddy, Tic Tac, and Right, and was receiving 540.
Love Love Paradise (100%) + J-Diddy (400%) + Right (400%) = 900% per mission (where 100% is the baseline).
From there, 540 divided by 9 = the baseline of 60 per mission.
I'm probably off on something here, but I'm too tired to think about it any more