Tolong Bantu jawabkan kk nomor 38,39,dan40

Tolong Bantu jawabkan kk nomor 38,39,dan40

38. 67 = $frac{(7.65) + (1 . x)}{7+1}$

67 = $frac{455 + x}{8}$

67 . 8 = 455 + x

x = 536 – 455

= 81 (A)

39.Dik : Mulok = 14%

TIK = 14%

IPA = 24%

IPS = 13%

Matematika = 100% – (mulok+TIK+IPA+IPS)

= 100% – (14%+14%+24%+13%)

= 100% – 65%

= 35%

35% x 140 orang = $frac{35}{100}$ x 140

= 49 orang (ga ada jawabannya)