The answer would be 48. Since UW is an angle bisector that would mean the angle was split in half evenly. Since the angles are now even, VUW = WUT. You can put the two equations equal to each other (4x + 6) = (6x - 10) after solving you would find that x = 8. Take that 8 and substitute it in the equation ( 6(8) - 10 ) and solve it.
