Now, let us assume that Brie has altruistic preferences. Her utility function is now given by:
UB(xA,yA,xB,yB)=(1/2)(2x12A+2y12A)+(2x12B+2y12B)UB(xA,yA,xB,yB)=(1/2)(2xA12+2yA12)+(2xB12+2yB12)
What would her utility be at the endowment now? (Round off your answer to the nearest whole number.)