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wanita= a
laki-laki=b
(1)a+b=35 => a=35-b
(2)69= 65a + 72b /35
69x 35=65(35-b)+72b
2415=2275-65b+72b
2415-2275=7b
140=7b
b=140/7=20
jadi bnyknya laki-laki nya 20 orang
jadi laki-laki sebanyak 21 (