![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
Master Wang processed a batch of parts. On the first day, he finished 1 / 4 and 7 of all the parts, and on the second day, he finished the remaining 2 / 5 and 2, leaving 5% of all the parts/ /18. How many parts are there in this batch
There are x parts in this batch
X - (1 / 4x + 7) - [2 / 5 (x-1 / 4x-7) + 2] = 5 / 18x, x = 36
A: there are 36 parts in this batch
Master Wang processes a batch of parts. On the first day, he completes 1 / 4 and 7 of all the parts. On the second day, there are two of the remaining two fifths, so there are still five fifths of all the parts left unprocessed?
Master Wang processes a batch of parts. On the first day, he completes 1 / 4 and 7 of all the parts, and on the second day, he completes the remaining 2 / 5 and 2, so that there are 5 / 18 of all the parts. How many parts are there in this batch? Let's set a total of X, and then there are: (x-x / 4-7) × (1-2 / 5) - 2 = 5x / 18; (3x / 4-7) (3 / 5) - 2 = 5x / 18
Master Wang processed a batch of parts. On the first day, he processed 7 more than a quarter of the total. On the second day, he processed the remaining 2 / 5 and 2
At this time, there are still 5 / 15 parts left. How many parts are in this batch
Suppose there are x parts
First day processing X / 4 + 7
The remaining X - (x / 4 + 7) = 3x / 4-7
Next day processing (3x / 4-7) * 2 / 5 + 2
In addition, the rest is equal to the total
x/4+7+(x-(x/4+7))*2/5+2+5x/15=x
The solution is x = 372 / 7
There should be a problem with the data of the title
Master Wang processed a batch of parts. He finished more than 1 / 4 and 7 of them in the first day, and the remaining 2 / 5 and 2 of them in the second day, leaving all 5 / 18. How many of these parts
Master Wang processes a batch of parts. On the first day, he completes more than 1 / 4 and 7 parts, and on the second day, he completes the remaining 2 / 5 and 2 parts, leaving all 5 / 18 parts?
It's the simplest way to solve the equation!
Suppose there are x parts in total, X / 4 + 7 is processed in the first day, and the remaining 3x / 4-7 is processed
The next day: (3x / 4-7) × 2 / 5 + 2
x/4+7+(3x/4-7)×(2/5)+2=(1-5/18)x
x/4+3x/10+7-14/5+2=13x/18
11x/20+31/5=13x/18
31x/180=31/5
x=900
900 parts in total
RELATED INFORMATIONS
- 1. ① Master Wang processes a batch of parts. On the first day, he processes 1 / 5 of all the parts. On the second day, he processes another 70 parts. At this time, the ratio of processed parts to unprocessed parts is 3:2. How many parts are there in total? ② There are two baskets of eggs. The number of eggs in basket a is 18 less than that in basket B. if six of them are taken out of basket a and put into basket B, the number of eggs in basket a is 4 / 7 of that in basket B. how many eggs are there in basket a and basket B
- 2. Master Wang processes a batch of parts. He completes 4 / 7 of the plan on the first day and the remaining 60% on the second day. At this time, there are still 42 parts left How many parts does Master Wang plan to produce
- 3. Master Wang made a batch of spare parts. On the first day, he made the planned 4 / 3, and on the second day, he made the remaining 3 / 5. At this time, there were 42 spare parts left. How many spare parts did Master Wang make?
- 4. We made a batch of parts. We made two fifths of these parts on the first day, and one third more on the second day than on the first day. What percentage of these parts were finished on the second day
- 5. Master Li finished machining parts in three days, 2 / 9 in the first day, 180 in the second day, exactly 2 / 3 of the total number
- 6. The cars of a and B leave from two places 270 kilometers apart at the same time and meet each other in two hours. It is known that the speed ratio of a and B is 8:7, so the car of a can travel every hour
- 7. The two cars leave from two places at the same time and meet three hours later. The speed ratio of car a and car B is 5:4. The distance between the two cars is 270 km. What's the speed of the two cars
- 8. Two cars drive from two places 270 kilometers apart and meet each other in 1.5 hours. It is known that the speed ratio of the two cars is 5:4. How many kilometers do the two cars travel per hour?
- 9. The two cars left from the East and West stations at the same time. They met 45 kilometers away from the east station for the first time. After that, the two cars continued to advance at the original speed. When they arrived at the station, they returned immediately and met again at 9 kilometers east of the midpoint. How many kilometers are the two stations apart?
- 10. The two cars left the east station and the west station at the same time. For the first time, they met 40 kilometers away from the east station. After that, the two cars continued to move forward at the original speed. After arriving at the station, they immediately returned and met again 30 meters away from the East station. How many meters away are the two stations?
- 11. Master Li originally planned to process a batch of parts. On the first day, he finished 47 of the original plan, and on the second day, he processed 20 more parts. At this time, what he had done was more than 27 of the original plan. How many parts did he plan to process?
- 12. The transport team plans to transport a batch of goods within three days. 4.8 tons were transported on the first day, accounting for 40% of the total. The ratio of tons transported on the second day to the third day is 3:5—— In a positive proportion
- 13. A group of goods were delivered to the teams a and B according to 5:3. The team transported 48 tons to complete the 45 of the team's task and transferred them. The rest were transported by team B. how many tons did the second team carry?
- 14. At the party on June 1, class 51 bought 3kg of fruit candy. The weight of fruit candy is 1 / 3 of that of melon seeds, and the weight of fruit is 5 / 2 of that of melon seeds How many kilos of fruit do you buy?
- 15. The two cars leave from a and B at the same time and meet at 40 km from the midpoint five hours later, What is the speed of the express train and the local train? How many kilometers is the distance between a and B? (using the arithmetic method, not the equation)
- 16. The distance between a and B is 350 km. An express train and a local train depart from the two places and meet in 3.5 hours. It is known that the speed ratio of the express train and the local train is 3:2. What are the two trains?
- 17. The distance between the two places is 280 km. Two cars of a and B leave each other at the same time. They meet two hours later. It is known that the speed ratio of a and B is 4:3. Calculate the speed of the two cars per hour Main formula
- 18. The distance between a and B is 480 km. Two cars leave each other at the same time and meet each other after 5 hours. One car travels 56 km per hour, and the other car travels how many km per hour?
- 19. The distance between the two places is 350 meters. Car a and car B drive from the two places at the same time and meet each other 3.5 hours later
- 20. It is known that car a takes 1.5 hours more to complete the whole journey than car B. car a travels 40 kilometers per hour and car B travels 50 kilometers per hour______ The two cars met in two hours