Jawabanmu

2014-04-28T11:31:15+07:00
15.
jenis 1: 6 kg, 4500/kg
jenis 2: 4 kg, 4750/kg
total beli : (6*4500)+(4*4750)=27000+19000=46000
dijual lagi 5520/kg, total 10 kg.
total jual : 10*5520=55200
persentase keuntungan = (harga jual-harga beli)/harga beli*100% = (55200-46000)/46000 = 9200/46000*100% = 20%