plis tolong jawab,,5 menit lagi dikumpul,,,yang jawab semoga masuk surga aminn,,, pakek cara!!

17. diket. n= 40
mtk = 12/40 * 100 = 30 %
# D

18. diket. n = 72
A = 12,5%
jadi
-> x/72 * 100 = 12,5%
-> 100x/72 = 12,5%
-> 100x = 900
jadi x = 900/100
= 9
# B