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Verified answer
1 kodi = 20 buahRp 100.000/20
= Rp 5000 per buah
2 lusin = 24 buah
Rp 5000 x 24
= Rp 120.000
1 lusin = 12 buah
2 lusin = 24 buah
misal harga 2 lusin pensil = x
x / 100.000 = 24/20
x / 100.000 = 6/5
x = 6/5 x 100.000
x = 120.000
Maka harga 2 lusin pensil adalah Rp. 120.000