Jawabanmu

2014-06-05T19:34:31+07:00
2.700.000 x 10% = 270.000
2.700.000 + 270.000 = 2.970.000
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Jawaban paling cerdas!
2014-06-05T19:38:55+07:00
Misal harga beli=a
 a= harga jual + kerugian = 2700000 + (10/100 x a)
⇔ a = 2700000 + a/10 
⇔ a-a/10 = 2700000
⇔ 9a/10 = 2700000
⇔ 9a = 27000000
⇔ a = 3000000
jadi harga beli komputer tsb Rp 3.000.000
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