See the attached picture:
Is there more context to the question?
M<UWV =180- 99 -36= 45
45 = 1/2(94+20- arcUV)
45=57 - arcUV/2
arcUV / 2 = 57-45
arcUV / 2 =12
arcUV = 12(2)
arcUV = 24
answer is B. 24
143.17 times 1.35 = 193.28
Im guessing he answered 30 correct, let me know if im correct