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perempuan = 160×35=5600
laki laki = 171×20=3420
5600+3420=9020
jadi,jawabannya A.35 dan 20
saya pakai logika..nggak tau rumus soalnya
160p + 9405 - 171 p = 9020
160p - 171p = 9020 - 9405
-11p = -385
p = -385/-11
p = 35
L = 55 - p
= 55 - 35
= 20
perempuan = 35
laki-laki = 20 (A)