And in case any one else's brain works like mine, for pot odds:

You're putting $10 in to get a share of the pot. The total pot will be $35, and obviously you want your share to be worth at least $10, so as a percentage it's $10/$35 = 29%.

edit this is just how I remember the pot odds/equity formula, and should only be applied to pot-odds situations. not suitable as a complete milk food for infants.