![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
During the May Day holiday, home appliance stores hold TV sales promotion activities. One of the color TV sets can make a profit of 200 yuan if it is sold at a 10% discount on the price. If it is sold at a 15% discount on the price, it will lose 75 yuan?
Price: (200 + 75) / (90% - 85%) = 275 △ 0.05 = 5500 (yuan) purchase price: 5500 × 85% + 75 = 4675 + 75 = 4750 (yuan) a: the purchase price of this color TV is 4750 yuan
How many Mu is 514000 square meters
15 mu = 10000 square meters
51.4 * 15 = 771 Mu
The solution equations are: (x + 7) △ 1 and 1 / 5 = 6.4 and x-x4 / 9 = 4.5 and 1 / 7
(x + 7) △ 1 and 1 / 5 = 6.4
x+7=6.4*1.2
x+7=7.68
x=0.68
X-x4 / 9 = 4.5 △ 2 and one seventh
x-x4/9=2.1
5x/9=2.1
x=2.1*9/5
x=3.78
In the activity of home appliances going to the countryside, a certain brand of color TV held a promotion. The current price of the color TV is 3600 yuan. How much is the original price? It is sold at 10% discount of the original price
It's 4000 yuan
How many square meters is 10 mu of land equal to
10 mu = 666.6667 square meters
X ^ 2-10x + 9 = 0 to solve the equation
X ^ 2-10x + 9 = 0 to solve the equation
(x -9) (x -1) = 0
X = 9 or 1
The price of a certain brand of TV is 2000 yuan after it is 1 / 5 lower than the original price. How much is the original price?
There is a formula
Let it be x yuan
x*(1-0.2)=2000
X = 2500 yuan
-What is the square of 2?
-The square of 2 =?
The square of (- 2) =?
Solution
(-2)²=4
-2²=-4
Solving the equation: 9 / 10x-3 = 3 / 5 x-x / 12 = 9 necessary process
9/10X-3=3/5
9/10x=3+3/5
9/10x=18/5
x=18/5÷9/10
x=4
X-X/12=9
11/12x=9
x=9÷11/12
x=108/11
A new batch of TV sets is bought in a shop at a price of 1500 yuan and a price of 2000 yuan. If they are sold at a discount according to the price and the profit is 20%, how much discount will the shop give
10% off
The price of 20% profit is 1800,
10% off 2000 is 1800
RELATED INFORMATIONS
- 1. The inverse theorem of Pythagorean theorem is that if the sum of the squares of two right angles equals the square of the hypotenuse, then the triangle is a right triangle?
- 2. Solve the equation... 9 / 5 x-x = 4.8
- 3. The team plans to build a road in four days. On the first day, it will finish 3 / 20 of the total, and on the second day, it will finish the remaining 4 / 5. On the third and fourth day, the ratio of meters is 3:2, On the fourth day, we repaired 146 meters, just finishing the task. How many meters is the length of this road?
- 4. A. There are 84 people in class B and 58 people in class A and class B. how many people are there in class a
- 5. Solution equation: 21x = 35-8
- 6. The original price of a kind of TV set is 2400 yuan. The price of the TV set is reduced by a quarter when the shopping malls are engaged in sales activities. After the activities, the price is increased by a quarter. How much is the price of the TV set
- 7. A shopping mall to promote sales, the provisions: buy a TV or One day, the mall sold 100 TV sets and refrigerators, including 75 TV sets, 50 microwave ovens and 18 Electric irons. Q: how many microwave ovens and electric irons did the mall give away that day? Trouble you, thank you ~ to have formula, process, urgent~~^_^
- 8. During the promotion period of a shopping mall, it is stipulated that all goods in the shopping mall are sold according to 80% of the price. When customers spend a certain amount of money in the shopping mall, they can get the corresponding amount of lottery tickets according to the following scheme. (lottery shopping no longer enjoys preferential treatment) the price is x (yuan) 100 ≤ x < 200200 ≤ x < 400400 ≤ x < 600 The amount of lottery ticket (yuan) 50100150 If the price of the goods Mr. Hu bought in the shopping mall is 450 yuan, what is the discount______ Yuan
- 9. Please use two methods to solve the following questions 1. The original price of a computer is 5800 yuan. During the "11th" promotion period, the price will be reduced by 800 yuan. What's the percentage of the price reduction? 2. The original price of a computer was 5800 yuan, which was reduced by 15% during the "11th Five Year Plan" period. How much was the reduction? 3. The current price of a computer is 5000 yuan. The original price is 16% higher than the current price. How much is the original price higher than the current price?
- 10. The original price of a piece of clothing is 200 yuan. How much is it to reduce the price by 10% first and then increase it by 200 yuan? Formula
- 11. X-2 / 5 = 16 * 2
- 12. How to solve the equation of 16.2 + 4x = 8x?
- 13. X-0.52 = 1.3 (solution equation)
- 14. How to solve the equation x divided by 12-9 = 15?
- 15. X-39 = 5 / 7 x + 7 equation
- 16. Solve the equation x △ 2-x △ 4 = 32
- 17. To solve the equation: 3.2 out of 7 equals x + 8 out of 5
- 18. Solution equation: x + 3 = 3x-5
- 19. 1 / 9x + 1 = 3 / 22 (x-1),
- 20. Let x0 be the solution of the equation LNX + x = 4, then x0 belongs to the interval () A. （0，1）B. （1，2）C. （2，3）D. （3，4）