Board Thread:Breeding Questions/@comment-11614292-20130706142047

May I ask about Rarity Boost? "Rarity Boost raises the chances of getting a Rare, Legend or Pure Dragon is increased by 50%" => So let's assume I originally have 10% chance of getting a Legend, if I use Rarity Boost, will the new chance be 10% + 50% = 60%, or will it be 10% + 5%(50% of 10) = 15%?

And what do u think? Is it wise and worth to spend 5 gem for Rarity Boost? 