if theres 2 and 15, its just 2 of that to 15 of the other
its 2:15 or 2/15 or whatever way you want to write a ratio
fun fact:
The Hog Rider card is unlocked from the Spell Valley (Arena 5). He is a quick building-targeting, melee troop with moderately high hitpoints and damage. He appears just like his Clash of Clans counterpart; a man with brown eyebrows, a beard, a mohawk, and a golden body piercing in his left ear who is riding a hog. A Hog Rider card costs 4 Elixir to deploy.