perhatikan daftar harga Berikut barang jaket harga Rp150.000 diskon 20% celana harga Rp120.000 diskon 15% jika tomas membeli 1 jaket dan 2 celana maka berapa ju

tomas harus bayar ;
= (1 jaket) + (2 celana)
= (150.000 - 20%jaket) + ( 2 x (120.000 - 15%celana) )
= [150.000 - (20/100 x 150.000)] + [2 x (120.000 - (15/100 x 120.000) ]
= [150.000 - 30.000] + [2 x (120.000 - 18.000)]
= 120.000 + 204.000
= 324.000
jadi tomas harus bayar = Rp 324.000,00