The cost of a commodity is a yuan per piece. If the cost is increased by 25% as the selling price, then the price is reduced by 92% of the price due to overstocking in the warehouse, and each piece can still be profitable______ ．

[a × (1 + 25%) × 92% - A] / A, = [1.15a-a] / A, = 0.15A ／ a, = 15%. Answer: each piece can make 15% profit. So the answer is: 15%

The price of a commodity is 6.25 yuan, and the profit can still be 25% if the price is reduced by 20%. What is the cost of the product? What is the percentage of the expected profit when pricing?

Cost = 6.25 × (1-20%) / (1 + 25%) = 4
Expected profit percentage = (6.25-4) △ 4 = 56.25%

If a commodity is sold at a reduced price according to the season, if it is reduced by 10% at the current price, it will still make a profit of 180 yuan. If it is reduced by 20%, it will lose 240 yuan. How much is the purchase price of this commodity?

Suppose the current price is x yuan, from the meaning of the question: (1-10%) x-180 = (1-20%) x + 240, & nbsp; & nbsp; & nbsp; & nbsp; 90% x-180 = 80% x + 240, & nbsp; 90% x-180-80% x = 80% x + 240-80% x, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 10% x-180 = 240, & nbsp; 10% X

Fill the ten numbers 1 to 10 into the ten circles in the figure below, so that the sum of the four numbers on each line is equal to 21
The problem is the comprehensive competition of blue sky operation bubble hall
I can add points!
I'm from Jingtian branch

I'm also from Jingtian branch: this problem is really a little difficult to solve. I'll give a picture instead of a formula. I hope LZ can give me a good comment!: - D

Fill 1-9 in the circle so that the sum of the numbers in each circle equals 16

Wearing nine shoes one, left three, right seven, two four shoulders, eight six feet, five in the center
4 9 2
3 5 7
8 1 6

2 / 3 + 2 / 8 + 2 / 15 + 2 / 24 + 2 / 35 + 2 / 48 + 2 / 63 + 2 / 80 =?
It's a simple calculation of fraction, off form!

3、8、15…… 2 ^ 2-1, 3 ^ 2-1, 4 ^ 2-1 respectively So the original formula = {2 / [(2 + 1) (2-1)] + 2 / [(3 + 1) (3-1)] + }=[1/(2-1)-1/(2+1)]+[1/(3-1)-1/(3+1)]+…… We find that most of them can be offset = 1 + 1 / 2-1 / 9

In the_ "Fill in (+),, ×, △ and brackets!
3_ 3_ 3_ 3=10

The product of 3 divided by 3 plus 3 times 3

Math problem about ratio, fill in the answers in brackets
In the sports meeting, the ratio of the number of participants to the number of non participants in class 6.1 is 3:5. The ratio of the number of participants to the number of the whole class is (): (), and the ratio of the number of non participants to the number of the whole class is (): ()

The first 3:8
The second 5:8

Fill in the appropriate score in brackets
750 g = () kg
40 seconds = () minutes
4000 sq m = () ha
6 hours = () days
32 cm = () M
810kg = () t

750 g = (3 / 4) kg
40 seconds = (2 / 3) minutes
4000 sq m = (2 / 5) ha
6 hours = (1 / 4) day
32 cm = (8 / 25) M
810 kg = (81 / 100) t

1 / 4,1 / 4,1,4,9,) find the rule, what do you fill in the brackets?

1 / 4, 1 / 4, 1, 4, 9, (16). The integers of 1 / 4 are 0, 1 is greater than 0, 1, 4 is greater than 1, 3, 9 is greater than 4, 5, 16 is greater than 9, 7, and the differences are odd, and they are arranged from small to large

The cost of a commodity is a yuan per piece. If the cost is increased by 25% as the selling price, then the price is reduced by 92% of the price due to overstocking in the warehouse, and each piece can still be profitable______ ．