The price of each set is 2100 yuan. The ratio of the first day's sales volume to the second day's sales volume is 5:3, which is the actual first day's sales volume Then the above: 54 units were sold in one day, more than 20% of the original plan. A total profit of 21600 yuan was made in two days?

The price of each set is 2100 yuan. The ratio of the first day's sales volume to the second day's sales volume is 5:3, which is the actual first day's sales volume Then the above: 54 units were sold in one day, more than 20% of the original plan. A total profit of 21600 yuan was made in two days?

Your topic should be the ratio of the planned sales volume of the first day to the actual sales volume of the second day
The original plan is to sell x sets on the first day
X*（1+20%）=54 x=45
The next day's sales volume = 45 / 5 * 3 = 27
Purchase price = [(54 + 27) * 2100-21600] / (54 + 27) = 1833