If the price of a commodity is 800 yuan and it is sold at 10% discount, it can still make a profit of 20%, then the purchase price of this commodity is______ Yuan

If the price of a commodity is 800 yuan and it is sold at 10% discount, it can still make a profit of 20%, then the purchase price of this commodity is______ Yuan

Suppose the purchase price is x yuan, then: x + X × 20% = 800 × 0.9, the solution is: x = 600