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25 ons : 30 ons ....dibgi 5
5 : 6
2. uang = 1.100.000, perbandingn 1: 10
ali : widi
100.000 : 1.000.000
jadi bsr uang ali = Rp 100.000
3. hrga 5 butir = 8000
harga 1 butir = 8000/5 = 1.600
jadi hrga 2 lusin = 12x2 x 1.600 = Rp 38.400
catatan : 1 kg = 10 ons
1 lusin = 12 buah