![](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>)
A question on the sixth grade paper: one seventh of the number a is equal to one fourth of the number B, then the number a is greater than the number B. right or wrong
Wrong, because it does not rule out the case that both numbers are zero
B is equivalent to 5 / 6 of a, and a is equivalent to 4 / 3 of B. It is known that B is 4 years older than A. how old is a?
B is equivalent to 5 / 6 of a, and a is equivalent to 4 / 3 of B. It is known that B is 4 years older than A. how old is a?
There are 480 students in three grades in a school. The number of students in the fifth grade is 1 / 8 more than that in the fourth grade. The number of students in the sixth grade is 14 less than that in the fifth grade. How many students are there in each of the three grades?
Simplified continuous ratio: 16 / 3:4.5:25 / 6
13/4：29/6:8/3
&Nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 150 minutes: 0.25 hours: 3 minutes
Hope to have explanation, pro, I will have class soon
A 20 years old
Grade four 152
Grade five 171
Grade 6 157
RELATED INFORMATIONS
- 1. The sum of number a and number B is 210, and 13 of number a is equal to 14 of number B?
- 2. The sum of a and B, if you add a, it will be 210, if you add B, it will be 180?
- 3. One third of a is equal to one fourth of B. the ratio of a to B is ()
- 4. Master Li processes a batch of parts at a low price. He processes two fifths of the parts on the first day and 30% on the second day, leaving 60 unprocessed parts
- 5. When Master Li processes a batch of parts, two fifths of the work is finished. According to this calculation, how many hours does it take Master Li to complete all the tasks?
- 6. The master and the apprentice produce a batch of parts. The parts produced by the apprentice account for two fifths of the total number of parts. If the apprentice gives the master 15 parts, the ratio of the number of parts produced by the apprentice and the master is 1:3. How many parts are there in total?
- 7. When Master Zhang processes a batch of parts, the ratio of the number of parts completed on the first day to the total number of parts is 1:3. If he processes another 15 parts, half of the batch of parts can be completed. How many parts are there in total?
- 8. A workshop to process a batch of parts, four days to complete two fifths of the total, if you do 54, just complete 50% of this batch of parts____________________ According to the conditions in the question, add a suitable question,
- 9. When a workshop makes a batch of parts, it completes one fourth of the total number in the first day, two fifths of the total number in the second day, 50 parts in the first day, and how many parts in the second day
- 10. A workshop processes a batch of parts, 2 / 5 of the total number is completed in the first day, 1 / 4 of the first day is completed in the second day, a total of 50 parts are completed in two days, how many parts are there in total (solve with calculation process) please help! Thank you
- 11. 1. For a project, 18 people can work for 20 days, 12 hours a day. Ten days after the start of the project, they decided to complete the project three days ahead of schedule, reducing the daily working time by a quarter, How many people can complete the construction? 2. In grade five, there are 35 people who love music, 28 people who love art and 5 people who don't like anything. How many people are there in this class? 3. There are 50 people in class 6-2, including 34 people who like to eat apples, 29 people who like to eat pears, 32 people who like to eat bananas, 15 people who like to eat apples and pears, and 12 people who like to eat apples and bananas. There are no three kinds of apples and no three kinds of bananas. How many people love both pears and bananas? 4. In the natural numbers from 1 to 50, how many numbers can't be divided by 3 or 5? 5. There are 100 soldiers in an infantry company, 80 of them can play chess, 75 of them can play cards, 70 of them can play go, and 82 of them can play mahjong. How many of them are there in all four kinds? 6. The school organizes tree planting activities. 20 people work for 20 days, 15 hours a day, and can complete a piece of land 180 meters long and 20 meters wide. Now 30 people work one third longer every day. How many days does it take to complete a piece of land 360 meters long and 30 meters wide They all use formulas, not equations, but there's no difference. 555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555
- 12. There are 54 students in class 6 (1) of a school, including 27 boys. What is the percentage of boys in the class? What is the percentage of girls?
- 13. There are 54 students in class 6 (1), 12 of whom are short-sighted. The students with normal vision in class 6 (1) account for the majority of the class______ %．
- 14. The work efficiency ratio of a and B workers is 3:2, B worker processes 12 toys per hour, and a and B cooperate for 8 hours The work efficiency ratio of a and B workers is 3:2. B workers process 12 toys per hour, and a and B work together for 8 hours. How many more toys does a process than B?
- 15. Kindergarten teachers give each child 5 biscuits, 22 more biscuits; each child 7 biscuits, 18 less biscuits How many children and how many biscuits are there?
- 16. First, Party A will finish the work in 12 days, and Party B will finish the work in 18 days. After six days of cooperation, Party B will do the rest of the work alone. How many days will it take to finish? If you have a unit, you need to write a formula
- 17. First, Party A and Party B cooperate to complete the project in 12 days. Party A will complete the project in six days, and the rest will be completed in 21 days. If Party B does all the work alone, how many days will it take to complete it
- 18. If 1 / a = B + 3 / a = 1 / 7 (a, B are natural numbers), then B=
- 19. The number B is 78 of the number A. if the number a is 56, then the number B is 78______ If B is 56, then a is 56______ ．
- 20. The sum of the numbers a and B is 275. When the number a is increased by 10 times, it is equal to the number B. when the number a is reduced to one tenth, it is ()