The color TVs were sold at a profit of 15.2%.
Solution: Let the purchase price of color TVs be x dollars per unit and the number of color TVs be y units.
Then according to the question, the cost price of y color TVs is xy dollars and the pricing of color TVs is 1.2x dollars each.
Sales of 80% of the color TVs sold at the pricing = 1.2x*y*80% = 0.96xy,
Sales of the remaining color TVs sold at a 20% discount on the pricing = 1.2x*0.8*y(1-80%) = 0.192xy.
Therefore, sales of all the y color TVs sold out = 0.96xy + 0.192xy = 1.152xy. 1.152xy.
Then the profit percentage of y color TVs sold out = (1.152xy-xy)/xy*100% = 15.2%.
Expanded:
1, the formula for calculating the profit margin
Profit margin is often expressed as a percentage. Profit margin = profit ÷ cost × 100%.
2, profit margin expression
(1) sales margin
Sales margin = total sales profit ÷ total sales revenue × 100%.
(2) cost margin
cost margin = total sales profit ÷ total cost of sales × 100%.
(3) Production Value Profit Margin
Production Value Profit Margin = Total Sales Profit ÷ Total Production Value × 100%.
(4) Capital Profit Margin
Capital Profit Margin = Total Sales Profit ÷ Average Capital Occupancy × 100%.
(5) Net Profit Margin
Net Profit Margin = Net Profit ÷ Net Sales × 100%.
Baidu Encyclopedia-Profit Ratio