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a orang = 8 hari
8a = 12 × 24
8a =12 × 24 ÷ 8
a = 12 × 3
a = 36
Jadi , agar selesai 8 hari , membutuhkan 36 pekerja
x orang = 8 hari
8x = 24*12
x = (24*12)/8
x = 3*12
x = 36 orang