A pile of coal, 38 tons today, 110 more than yesterday, how many tons yesterday? The correct formula is () A. 38÷〔1+110）B. 38×（1+110）C. 38×（1-110）D. 58×（1-110）

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• 1. A pile of 3 tons of coal is divided into 5 parts on average, each part is () tons, and each part accounts for a few parts of the whole
• 2. The weight difference between the two barrels of oil is 9kg. If 15% of the weight of oil in barrel a is equal to 12% of the weight of oil in barrel B, then the weight of oil in barrel B is the same______ &Kg
• 3. The weight of a barrel of oil is 1.5 times that of B barrel of oil. If 2.5kg oil is taken out of a barrel of oil, the weight of a and B barrels of oil will be equal Add conditions or questions according to the formula 1. A book has 100 pages, how many pages have you read? 100*1/5：—— 100-100*1/5—— 2. One road is 400 meters long, and one fifth of it has been built? 400*1/5：—— 400-400*1/5：—— ——It needs to be filled in by yourself
• 4. The weight of a oil barrel is 1.5 times that of B oil barrel. If 2.5kg is taken out of a oil barrel and put into B oil barrel, then the weight of a and B oil barrels is equal How many kilos each I know the answer, the clearer the better!
• 5. There is a pile of coal, if you use a car to transport it all at once, you need 36; if you use B car to transport it all at once, you need 45. It is known that a car transports 1.5 tons more than B car. How many tons of this batch of coal are there in total? A simpler way to do it
• 6. There is a pile of sand. It takes 36 cars to transport by car a and 45 cars by car B. It is known that each car of car a transports 1.5 tons more than that of car B. how many tons of sand is there?
• 7. Two granaries coexist with 1800 tons of wheat. If 400 tons are transported from warehouse A, the weight of the remaining wheat in warehouse A is just 34 times that of warehouse B. how many tons of wheat were stored in warehouse B?
• 8. A pile of coal, the first transport away two fifths, exactly 60 tons, the second transport away one fifth of the remaining coal, how many tons are left
• 9. Two fifths of a pile of coal was used in the first time, and three eighths of it was used in the second time. There are 180 kg left. How many kg of this pile of coal Using the equation solution,
• 10. 34 of number a is equal to 25 of number B. number a is 80 and number B is 25______ ．
• 11. There are two piles of coal with a total of 19 tons. If 40% of the coal is transported from the first pile and three tons are transported from the second pile, then the weight is equal. How many tons of coal is there in the first pile
• 12. Two piles of yellow sand are 5.7 tons in total. 34 tons are used in the first pile and 35 tons in the second pile. The remaining two piles are 15 tons less than the first pile. How many tons are there in the first pile?
• 13. There are two piles of coal. The first pile carries three-quarters of it, the second pile carries two-thirds of it, and the rest of the two piles together is three-quarters of the same pile If the two piles originally weighed 105 tons, how many tons did they each weigh?
• 14. 1. There are two piles of coal. The first pile weighs two-thirds of a ton, and the second pile weighs one-third more than the first pile. How many tons does the second pile weigh? 2. It is planned to fold 40 paper cranes. Five eighths of them have been folded. How many more can be folded to complete the task?
• 15. There are three piles of coal with a total weight of 27 tons. If 1.5 tons of coal is transported from the first pile and the second pile to the third pile, the mass ratio of the first pile, the second pile and the third pile is 1:2:3 How many tons of each of these three tons of coal?
• 16. The total weight of the three piles of coal is 30 tons. If one ton is transported from the first pile and the second pile to the third pile respectively, the mass ratio of the three piles of coal is 2:1 It's urgent. It's better to solve it today
• 17. The total weight of the three piles of coal is 24 tons. If 0.5 tons are transported to the third pile from the first pile and the second pile respectively, the ton ratio of the three piles of coal is 2; 1; 3. How many tons of the three piles of coal
• 18. When transporting cement from the station to the two construction sites, the tonnage of cement is the same. Car a transports 1.5 tons to site a each time; car B transports 2.5 tons to site B each time. At rest, car B transports 3 times less than car a, and knows that there are still 3.5 tons of cement left for site a and 4 tons left for site B, so how many tons of cement should be transported to each site
• 19. 1. There are two piles of 900 bags of cement in a construction site. If 40 bags are taken from pile a and put into pile B, the cement in pile a is four times as much as that in pile B, and there is water in pile B How many bags of clay? 2. In a math exam of a certain class, the average score is 78. The average score of boys is 77, and that of girls is 81. How many times is the number of boys? 3. A factory wants to manufacture a batch of machine tools. It plans to produce 64 machine tools every day, which can be completed in 15 days. In fact, it completes the task three days ahead of schedule. How many more machine tools can be produced every day than planned?
• 20. The sum of 20% of a and 4 is equal to 2 / 3 of B. If a is 80, find B