Practical problems of grade 6 1. The fruit shop wholesales a batch of oranges and pears at a total price of 1700 yuan. When the oranges are sold at 26% profit and the pears are sold at 11% profit, the total price is 2007 yuan. How much is the purchase price of these oranges? 2. The department store sells a batch of clothes at 60 yuan per piece. When five eighths of the clothes are sold, the department store will make a profit of 200 yuan after recovering all the costs. When the rest of the clothes are sold, it will make a profit of 1800 yuan. What is the cost of this batch of clothes? 3. At present, the concentration of 10% brine is 20 kg. How many kg of 30% brine can be added to obtain 22% brine? 4. For a TV set, the market will add 35% to the purchase price, and then sell it at a 10% discount. The price of each TV set is 50 yuan, so that each TV set can make a profit of 208 yuan. How much is the purchase price of this TV set?

Practical problems of grade 6 1. The fruit shop wholesales a batch of oranges and pears at a total price of 1700 yuan. When the oranges are sold at 26% profit and the pears are sold at 11% profit, the total price is 2007 yuan. How much is the purchase price of these oranges? 2. The department store sells a batch of clothes at 60 yuan per piece. When five eighths of the clothes are sold, the department store will make a profit of 200 yuan after recovering all the costs. When the rest of the clothes are sold, it will make a profit of 1800 yuan. What is the cost of this batch of clothes? 3. At present, the concentration of 10% brine is 20 kg. How many kg of 30% brine can be added to obtain 22% brine? 4. For a TV set, the market will add 35% to the purchase price, and then sell it at a 10% discount. The price of each TV set is 50 yuan, so that each TV set can make a profit of 208 yuan. How much is the purchase price of this TV set?

1. Analysis: if all the pears are priced according to 11% of their profits, then the money sold will be less than 2007 yuan. The less part is that 26% of orange's profits are more than 11% of orange's profits. From this, we can get orange. 2007-1700 × (1 + 11%) = 120 (yuan) 120 × (26% - 11%) = 800 (yuan)