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2 lusin =24 buah
Kalau 3 piring pecah jadi 21 piring
21 piring dikali 3500=10.500
Harga 2 lusin (HB) Rp 12000
[email protected] Rp 12000 : 24 = Rp 500
HJ = 21 x Rp 3500 = Rp 73500
UNTUNG = HJ - HB
= 73500 - 12000
= 61500