2. the original pricing of a and b goods is the same. Commodity A is reduced by one fifth for the first time and one tenth for the second time. The price of commodity B will be reduced by three twentieth first, and then by three twentieth on the basis of the first price reduction. Are the prices of these two commodities the same now?
There are two bookshelves. The books on the first bookshelf are one ninetieth of those on the second. If you take 33 books from shelf B and put them on shelf A, there are as many books on both shelves. How many books are there on shelves A and B?
4. A stereo franchise store sold two sets of stereos with different brands at a price of 3,600 yuan, one set earned one fifth and the other lost one fifth. Is it a profit or a loss to sell these two sets of stereos?
Uncle Zhao is going to buy a house. If he pays in installments, he has to increase the price by seven tenths, and if he buys it in cash, he can get a discount of one twentieth. Uncle Zhao calculated that installment payment costs 60 thousand yuan more than cash purchase. What is the original price of this house?
6. Master and apprentice work together to process a batch of parts, which will be finished at 5 o'clock. After completion, the apprentice handled seven twentieth of the total. It is known that the master processes 12 more parts per hour than the apprentice. How many parts are there in this batch?
7. There was a batch of fruit in the fruit market, which sold 80 tons in five days, just a quarter of this batch of fruit. According to this calculation, how many days will the fruit be sold out?
Set me as the best answer! I typed more than 500 words in half an hour! ! )