1. Pedagang menjual satu karung beras seharga 250.000 rupiah. Pedagang mengalami kerugian 10%, berapa harga pembelian satu karung beras
Jawab:
Harga jual = Rp 250.000
Kerugian = 10%
Rugi = [tex]\frac{Harga \ beli - Harga \ jual}{Harga \ beli}[/tex]×100%
10% = [tex]\frac{Harga \ beli - Rp 250.000}{Harga \ beli}[/tex]×100%
Harga beli = (Harga beli - Rp 250.000) × 10
Harga beli = 10 Harga beli - Rp 2.500.000
11 Harga beli = Rp 2.500.000
Harga beli = Rp 227.272,72 ≈ Rp 227.273
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