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There are several schemes for a store to sell a commodity, among which the one with the lowest price is (1), first increase the price by 10%, and then reduce the price by 10% (2) First reduce the price by 10%, then increase the price by 10% (3) First increase the price by 20%, then reduce the price by 20% (4) First increase the price by 30%, then reduce the price by 30% Which price is the lowest after price adjustment
It is suggested that you reduce the price first in the form of activities, and increase your price by 10% in the form of restoring the original price later
There are three ways for a store to sell a commodity
1. First raise the price by 10%, then reduce the price by 10%
2. First reduce the price by 10%, then increase the price by 10%
3. First raise the price by 20%, then reduce the price by 20%
Is the price adjustment result of the three schemes the same?
If it's a good answer,
I'll add points
Let the original price be a
In the first case:
a(1+0.1)(1-0.1)=0.99a
The second situation
a(1-0.1)(1+0.1)=0.99a
The third situation
a(1+0.2)(1-0.2)=0.96a
In order to deal with the international financial crisis, Jinlianhua supermarket has the following plans when dealing with a certain commodity: ① increase the price by 20%, and then reduce the price by 20%; ② reduce the price by 20%, and then increase the price by 20%; ③ increase the price by 15%, and then reduce the price by 15%? What kind of price adjustment scheme do you suggest the supermarket should adopt?
Suppose the original price of this commodity is a yuan, then ① (1 + 20%) (1-20%) a = 0,96a; ② (1-20%) (1 + 20%) a = 0,96a; ③ (1 + 15%) (1-15%) a = 0,9775a; therefore, the price adjustment result does not restore the original price. Because 0,9775a > 0,96a, it is suggested that supermarkets should adopt the third price adjustment method
RELATED INFORMATIONS
- 1. 17. The original price of a computer is a yuan. After a reduction of M yuan, the price is reduced by 20%. The current price is_______ Yuan. 18. The area of the biological garden will be as large as possible if a 16m long fence is used to form a circular biological garden and rabbits are raised_______ M2. (result retention π)
- 2. If the price of each computer is 9000 yuan, 20 computers will be sold. If the price of each computer is reduced by 300 yuan, one more computer will be sold every day, How many sets do you sell every day? How many yuan is the maximum sales
- 3. If the price of a computer is RMB m after 20% reduction, the original price of the computer is RMB a.0.8m, RMB b.0.2m, RMB c.0.2, RMB m, and RMB d.0.8
- 4. The price of a computer after 40% price reduction is 3600 yuan. How much is the original price of this computer
- 5. For a drug, the first price reduction is 10%, and the second price reduction is 20%. Now the price of the drug is () A. 70%B. 60%C. 72%D. 64%
- 6. The price of a drug is 15% lower than in the past. The current price is ()
- 7. The original price of a coat is 180 yuan, and the present price is reduced by 4 / 9. How much is the present price
- 8. Math problem: the original price of a coat is 240 yuan, and the seasonal discount is reduced to 80 yuan. How much lower is the price of this coat than the original price? Process! Online, etc One more question: There are 18 classes in grade 4, 5 and 6 of a school, with an average of 48 students in each class. The ratio of students in grade 3 is 4:2:3. How many people were there in 1956??????????????? The process...........
- 9. After the price of a drug increased by 30% in 2006, the price decreased by 70% to 30 yuan in 2007. How much is the price of this drug before the price increase in 2006? Formula or equation
- 10. The price of a drug increased by 30% in 2008 and decreased by 70% in 2010. The price is 19.5 yuan
- 11. The original price of a commodity is 200 yuan. First reduce the price by 20%, then increase the price by 20%. Now how much is the price per piece
- 12. If the price of a commodity increases by 1 / 10 and then decreases by 1 / 11, then the current price () is the original price
- 13. When a dress costs 100 yuan, the mall first raises the price by 10% and then reduces the price by 10%. How much is the current price?
- 14. For a commodity, the price first increases by 1 / 5 and then decreases by 1 / 5. The current price is 120 yuan per piece. What is the original price
- 15. For a watch, the price first increases by 110, and then decreases by 110. At this time, the price is 49.5 yuan. How much is the original price of this watch?
- 16. The original price of a set of "math PHS" is 50 yuan. How much should it be after two consecutive price cuts of 10%
- 17. In order to meet the "11" golden week, all commodities are sold at a price of 15 yuan. A coat is sold at 640 yuan after the price reduction. How much is the original price of this coat?
- 18. ·What is the original price of a commodity that has been reduced by 10% twice in a row and B commodity that has been increased by 10% once in a row and later sold for M yuan
- 19. The unit price of a commodity is reduced from 200 yuan to 128 yuan after two successive price cuts
- 20. After the price of a commodity is reduced by 10%, the unit price is 180 yuan. What is the price of the original commodity