tolong di bantu nomer 29 dngn caranya

benar = b
salah = s
tidak dijawab = t

2b - s = 52
2(29) - s = 52
58 - s = 52
s = 58 - 52
s = 6

Jumlah soal = b + s + t = 29 + 6 + 5 = 40 soal (C)