If you give a 10% discount on a garment, you can still make a profit of 200 yuan. If you give a 20% discount, you will lose 100 yuan. What is the cost price of the garment?

If you give a 10% discount on a garment, you can still make a profit of 200 yuan. If you give a 20% discount, you will lose 100 yuan. What is the cost price of the garment?


(200 + 100) △ 90% - 80% × 90% - 200 = 300 △ 0.1 × 0.9-200 = 2700-200 = 2500 yuan; a: the cost price of this dress is 2500 yuan



An air conditioner is priced at 20% of the profit and then sold at 90% of the price. The result is a profit of 256 yuan. What's the cost price


256 / [(1 + 20%) * 90% - 1] = 3200 yuan



An air conditioner is priced at 25% of the cost price for profit. Later, it is sold at a 10% discount. As a result, the merchant makes a profit of 700 yuan. How much is the cost of the air conditioner?


Cost = 700 / (1.25 * 0.9-1) = 5600 yuan



1-16 these 16 numbers are filled in the 16 circles in the figure below to make the sum of the number of circles on the four vertices of the five squares equal
* * * *
* * * *
* * * *
*Each * represents a number





How to fill 1-9 numbers into 6 squares made of 9 circles to make the sum of four vertices of each square equal


Six squares and four vertices
1,2,99,98
3,4,97,96
5,6,95,94
7,8,93,92
9,10,91,90
11,12,89,88



Please fill 1-8 numbers into the circle at the vertex of the cube, as shown in the figure, so that the sum of the four numbers on each face is equal, and find out the sum





Fill the eight numbers 0 ~ 7 into the circle at the vertex of the cube to make the sum of the four numbers on each face equal


In front of the cube, starting from the top right, counter clockwise is (2 4 1 7); in the back, starting from the top right, counter clockwise is (5 3 6 0)



Please fill 1-8 numbers into the circle at the vertex of the cube, as shown in the figure, so that the sum of the four numbers on each face is equal, and find out the sum





Fill the 8 numbers 4-11 into the circle of the vertex of the cube, so that the sum of the numbers on the four corners of each face is equal





Fill the 8 numbers 4-11 into the circle of the vertex of the cube, so that the sum of the numbers on the four corners of each face is equal