The price of a commodity is 300 yuan, and the price is 450 yuan. In order to promote sales, it is sold at a lower price, but there is still 20% profit. How much discount is the commodity sold?

The price of a commodity is 300 yuan, and the price is 450 yuan. In order to promote sales, it is sold at a lower price, but there is still 20% profit. How much discount is the commodity sold?

Sell at a discount of X
300*(1+20%)=450*x/10
x=8
20% off