Question

Anita membeli 10 kg jeruk. kemudian, ia menjual kembali dengan harga Rp.12.000 per kg. jika anita mengalami kerugian sebesar 20%, harga pembelian jeruk per kg adalah (pakai cara)

Answer 1

12.000 = 1 kg
120.000 = 10 kg

Harga jual = harga beli - kerugian
Harga jual = harga beli - 20%harga beli
Harga jual = 100/100harga beli - 20/100 harga beli
Harga jual = 80/100harga beli

80/100 harga beli = 120.000
harga beli = 120.000 / (80/100)
harga beli = 120.000 * 100 / 80
harga beli = Rp 150.000,-

harga 1 kg = 150.000 / 10
= Rp 15.000,- perkg

Answer 2

H. jual = beli - kerugian
H. jual = beli - 20% beli
H. jual = 100/100beli - 20/100beli
H. jual= 80/100 beli

80/100  beli = 120.000
h. beli = 120.000 / (80/100)
h. beli = 120.000 * 100 / 80
h. beli = Rp 150.000,-

harga 1 kg = 150.000 / 10
= Rp 15.000,- perkg