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A TV set is now selling for 900 yuan, 3 / 10 cheaper than the original price. How much was the original price of this TV set? Xiaoqiang read 35 pages of an extra-curricular book, which is exactly 5 / 7 of the remaining pages. How many pages are there in this extra-curricular book? The kindergarten bought some apples, took out 1 / 4 of them to the big class, and took out 2 / 5 of the total to the small class, with 7 kg left. How many kg of apples did the kindergarten buy? For a piece of iron wire, 3 / 8 of the total length is used for the first time, 2.2m is used for the second time, and 5 / 6 of the total length is shared for the two times. How much is used for the first time? The first three questions use formula and equation, the last one is unlimited. The faster the better, the higher the accuracy If that's right, I'll raise the reward
1) 35 + 35 / (5 / 7) = 35 + 49 = 84 If the total number of pages is x, then 35 / (x-35) = 5 / 7, x = 84 2) 7 / (1-1 / 4-2 / 5) = 7 / 0.35 = 20 if the total number of pages is x, then x-0.25x
RELATED INFORMATIONS
- 1. A TV set is now selling for 900 yuan, 10 / 3 cheaper than the original price. How much was the original price of this TV set?
- 2. After a brand TV set is reduced by M yuan according to the original price, it is reduced by 10%, and the current price is n yuan. How much is the original price of the TV set? Please!
- 3. 15% off the current price: 1700.00 yuan. How much is the original price?
- 4. The current price of a washing machine is 1200 yuan, which is one fifth lower than the original price. How much is the original price of this washing machine
- 5. The original price of a washing machine is 780 yuan, which has been reduced by 30%. How much is the price of each washing machine now The answer to the second question of exercise 22
- 6. A kind of washing machine is sold at a 30% price reduction. After the price reduction, it's 1200 yuan cheaper. Ask its price and selling price
- 7. There is a washing machine in the shop, which is sold at 20% discount. The price is 1200 yuan. The price of this washing machine is ()
- 8. The original price of Qingquan washing machine is 1360 yuan, now 20% off; the original price of Hongye washing machine is 1200 yuan, now 15% off, () brand washing machine is cheaper
- 9. In the activity of home appliances going to the countryside to trade in the old for the new, the original price of a certain brand TV set was 4800 yuan, but now the price is reduced by 2%
- 10. A shopping mall will sell a brand of clothing at a discount due to season change. If each clothing is sold at a 60% discount on the price, it will lose 10 yuan, and if it is sold at a 75% discount on the price, it will earn 50 yuan. Question: (1) how much is the price of each clothing? (2) How much is the cost of each garment? (3) How much discount can I get at most to ensure no loss?
- 11. The current price of a brand TV is 1600 yuan, which is 20% lower than the original price. How much more is the original price?
- 12. Some kind of computer is now sold at 20% discount, which is 600 yuan cheaper than the original price. How much is the original price of this kind of computer? What's the current price?
- 13. The current price of a brand of computer is 2 / 13 lower than the original price, which is just 600 yuan lower. How much is the current price?
- 14. A commodity is priced at 20% profit, and then sold at 20% discount, resulting in a loss of 64 yuan. How much is the cost of this commodity?
- 15. A commodity is priced at 20% profit and then sold at a 20% discount, resulting in a loss of 200 yuan? There is a process
- 16. If a commodity is sold at 80% of the marked price, it will get a profit of 960 yuan. If it is sold at 80% of the marked price, it will lose 832 yuan compared with the cost price. What is the cost price of this commodity?
- 17. If a commodity is sold at 20% discount, it will lose 832 yuan. How much is the cost of the commodity?
- 18. If you buy a TV set at the current price, you will get a profit of 960 yuan. If you sell it at a 20% discount, you will lose 832 yuan. What is the cost price of the product
- 19. A commodity is priced at 20% profit, and then sold at 20% discount, resulting in a loss of 64 yuan. How much is the cost of this commodity?
- 20. A commodity is priced at 20% profit, and then sold at a 20% discount, resulting in a loss of 64 yuan. What is the cost price of this commodity?