The standard cost of steamed salmon in four-star hotels and He Xuan is well known.

The answer to this question is 140 yuan.

The prototype of this question is: it is known that the standard cost of steamed salmon in a four-star hotel in He Xuan is 56 yuan, the gross profit margin is 60%, and the sales price of steamed salmon is (). The specific calculation process is: the cost of this commodity is 56 yuan, the gross profit margin is 60%, and the sales price is 56/( 1-60%)= 140 yuan. Standard cost refers to the expenditure of goods in the process of production or procurement, including direct materials, direct labor, manufacturing costs, etc.

Gross sales margin refers to the ratio of gross sales margin to sales volume. Through the calculation of sales gross profit margin, the profitability of goods can be reflected. The selling price refers to the price that the seller sells the goods according to the market supply and demand, which can be higher or lower than the value of the goods. But as long as it is higher than the cost price of the commodity, even if it is lower than the value of the commodity, it will realize part of the surplus value contained in the commodity. Specifically, the selling price is the final transaction price of the goods.