Known profit margin: 30%
Known cost: 1 yuan.
According to the profit rate formula, the following equation can be obtained:
Profit rate = (sales price-1)/ sales price
Convert percentages to decimals and get the following equation:
0.3 = (sales price-1)/ sales price
Transform this equation to obtain the following equation:
Sales price = (1+0.3 times sales price)/USD 0.7.
According to the above equation, the following calculation formula can be obtained:
Sales price =( 1+0.3 \ times the sales price) /0.7
So, the price is:
$ (1+0.3 \ times1)/0.7 =1.8571428571428574 Yuan $