After the price of a color TV is reduced by 400 yuan, the price is 1600 yuan. How much has the price of this color TV decreased? 2. The price of a computer has been reduced by 10% compared with the original price of 6500 yuan for the first time and 10% for the second time. How much is the current price of the computer 3. The two engineering teams dug a tunnel together. When the tunnel reached 150 meters, team B dug one sixth more than team A. at this time, the two teams just dug 65% of the total length of the tunnel. How many meters is the total length of the tunnel? 4. A product is 2560 yuan after 20% discount. If it is 75% discount, how much is the price of this product?

1. 400÷（400+1600）=20％
2. 6500 × (1-10%) × (1-10%) = 5265 yuan
3. (150 × 2 + 150 × 1 / 6) △ 65% = 500m
4. 2560 △ 0.8 × 0.75 = 2400 yuan

RELATED INFORMATIONS

1. The original price of a TV set was 4000 yuan. First the price was reduced by 5%, then the price was increased by 5%. Now how much does it cost to buy a TV set? Is it 4000 yuan
2. A kind of color TV, the original price is 4000 yuan per set, now the price is reduced by 1 / 8, how much is the price reduced?
3. After the price of a certain brand TV set is reduced by 20%, the price of each TV set is 2430 yuan. How much is the original price of this kind of TV set? Use the equation to solve the problem
4. The original price of a brand TV set is 3600 yuan. The market first increases the price by 20% and then reduces the price by 20%. How much is the current price fast
5. The price of a certain brand TV set is 2430 yuan after 10% price reduction, so the original price of this kind of TV set is 2430 yuan______ Yuan
6. The first price reduction of a product is 10%, and the second price reduction is 10%. How much is the total price reduction in the two times fast
7. For a commodity, the first price reduction is 20%, the second price reduction is 10%, the current price is 432 yuan, the original price of the commodity?
8. The original price of a commodity is 500 yuan. The first price reduction is 10%, and the second price reduction is 12%
9. The original price of a commodity is 3580 yuan. The first price reduction is 10%, and the second price reduction is 20%. What is the current price equivalent to the original price?
10. The original price of a commodity is x yuan, the first price reduction is 10%, the second price reduction is 5%, how much is the current price
11. A kind of color TV was first reduced by 20% and then by 5%. What's the price now?
12. After the first 20% price cut of a TV set, the second 5% price cut is 3040 yuan. What's its original price?
13. After the first 20% price cut, the second 5% price cut for a TV set is 3040 yuan. Its original price is () yuan
14. For a batch of goods, after the first 20% reduction, the second 20% reduction. Now the price of this batch of goods is () A. 38%B. 40%C. 36%D. 39%
15. The price of a suit has increased by 10% and decreased by 10%. Now the price is 198 yuan. What's the original price?
16. A kind of LCD TV, after 15% price reduction, has been reduced by 10%. Now the price is 3672 yuan. How much is the original price of this kind of TV? How to draw the isometric relationship between a drawing and a column?
17. A refrigerator in a shopping mall has raised its price by 5% after two consecutive increases of 10%. If it wants to restore its original price, it should be reduced by at least x% (x is an integer), then x is equal to? Explain step by step, don't go too far~ I said don't go too far
18. After two consecutive price increases of 10% for refrigerators in a shopping mall, the price has been increased by 5%. Now the original price is restored, and the price should be reduced by at least x%. What is x Our formula 1 (1 + 10%) (1 + 10%) (1 + 5%) (1-x%) = 1 The result is that 21% of them don't have this answer. The option is a 22 B 23 C 24 D 25
19. The original price of a refrigerator is 3600 yuan. How much is the price after two successive price cuts of 1 / 10
20. The original price of a tape recorder is 300 yuan, which has been reduced by 1 / 5 for two consecutive times. How much is the current price?