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xp = 65
xw = 54
banyak pria= p
banyak wanita = w
(p+w)xg = p. xp + w.xw
(p+w)58 = p(65) + w(54)
58p + 58 w = 65 p + 54 w
58w - 54 w = 65 p - 58 p
4 w = 7 p
p : w = 4 : 7