Math Question

[The Devious Chicken]

I'm not very good with math, but this is what i checked out: Crusader Aura gives a 20% Mounted Speed Boost and doesn't stack with other Speed Boosts, and i have Expert Riding, a 150% flying Speed Boost. That would usually, when added with 100, equal 270%. But i get 300%. A nice boost, but it doesn't make a whole lot of sense. Can anyone figure this one out? (I'm not trying to yell at blizz for their lack of knowledge, i'm just pointing it out. Theres a big difference.)

[Rivin]

It's multiplicative. What you do is take your total unboosted speed, multiply it by 20%, and add the result to your total speed. In this case 250 * 20% equals 50, so your total speed is 300%.