Seorang pedagang membeli 1 1/2 lusin kaos seharga Rp. 300.000 per lusin, kemudian pedagang tersebut menjual seharga Rp. 30.000 per kaos, presentasi keuntungan y

1 lusin isi = 12 --> berarti 1 1/2 lusin isi = 18
harga total = 300.000+1/2X300.000 = 450.000

Total hasil penjualan = 18X30.000 =540.000
Laba= untung - pembelian  Sehingga 540.000-450.000 = 90.000

Prosentase keuntungan = laba/harga X 100%
=90.000/450.000X100%
=1/5X100%
=20%

Jawaban: C

Banyak kaos = [tex]1\frac{1}{2}[/tex] lusin = [tex]1\frac{1}{2}[/tex] x 12 = [tex]\frac{3}{2}[/tex] x 12 = [tex]\frac{36}{2}[/tex] = 18 kaos
Harga kaos = 300.000 per lusin
Harga seluruh kaos = 300.000 x [tex]1\frac{1}{2}[/tex] = 300.000 x [tex]\frac{3}{2}[/tex] = [tex]\frac{900.000}{2}[/tex] = 450.000
Harga jual per kaos = 30.000
Harga jual seluruh kaos = 30.000 x 18 = 540.000
Keuntungan yang diperoleh = [tex]\frac{540.000-450.000}{450.000}[/tex] x 100% = [tex]\frac{90.000}{450.000}[/tex] x 100% = [tex]\frac{1}{5}[/tex] x 100% = 20% ...(c)