Johanna has 1 =$181 to spend on goods x1 and x2. Her utility function is given by U(21,22) = 2 min{ax, bx,} where a =3 and b =5. Good x; costs P1 =$10 per unit, and good x2 costs P2 =$9 per unit. How much of good x1 does Johanna consume? Enter a numerical value below. You may round to the second decimal if necessary. (Partial quantities are allowed.)