how can we solve this question when we don't have budget set?

Question 4. (25%) Richard's preferences over chocolate, c, and money, m, can be represented by the utility function u(c,m) =66+m+6,u(c'rc)+pt(mTm) where TC is his chocolate reference point, rm is his money reference point, and the function is dened as a: 1:20 \"(m)= 3 - $ :L'