There are a number of boys and 4 / 5 of girls in the school. How many students are there in the school

A + four fifths of a people can also write (1 + four fifths) a people's upper and lower case and text to complete by themselves, it's not easy to write on the computer

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1. There are 1260 students in the primary school. The number of boys is four fifths of the number of girls. How many boys are there in the school
2. Dongfeng primary school has 450 students. The ratio of girls to boys is 4:5. How many boys and girls are there in this school?
3. Boys account for 4 / 7 of the students in a school, and girls are 50 less than 7 / 8 of boys. How many students are there in this school?
4. There are 28 boys and 26 girls in class 51. How many times is the number of boys? How many times is the number of boys
5. The number of boys in class 5 (1) is 4 / 5 of the number of girls. What is the percentage of boys in the class? What is the percentage of girls in the class?
6. 5、 There are 20 boys in the first class, 5 less than girls. What percentage of the class are boys and girls?
7. There are 12 male members and 16 female members in the school dance team. What is the percentage of female members? What's the number of male members of the dance team?
8. There are 26 boys and 24 girls in class one. Boys account for (), girls account for (), and boys are () more than girls, Girls less than boys 2. There are three shopping malls of a, B and C selling a brand of cosmetics, all of which are priced at 400 yuan. Store a carries out 20% discount on sales promotion, store B carries out "return 60 yuan in cash after 300 yuan", and store C carries out "buy one get two free" (that is, buy one big bottle of 400 yuan, give two small bottles, and the small capacity is one tenth of the big bottle). Which one is cost-effective? (write the formula.)
9. There are 50 students in class 1 of grade 6, including 24 girls. The ratio of boys to girls is (), and boys account for ()
10. There are 24 girls in class 61, 20% less than boys. How many girls are less than boys also Party A and Party B work together to build the road. Party A will finish it in five days alone. Party B will finish 1 / 3 of it in five days alone. The remaining two teams will finish it in a few days
11. In the two groups of data, the score above 130 is excellent. How many boys and girls are excellent, and how many students are excellent? The results of one minute rope skipping competition of 10 boys and 10 girls in class 1 of five years are as follows Boys: 142, 128, 138, 129, 140, 142, 137, 96, 98, 142 Female students: 128, 143, 151, 148, 146, 150, 147, 128, 128, 140
12. The students are going to have a picnic. There are 38 boys and 32 girls. What's the percentage of girls in boys? What's the percentage of boys in the total fast
13. There are 24 girls in the school chorus, 25% less than boys. How many boys are there in this chorus
14. There are 24 male students and 54 female students in the chorus group. What is the percentage of male students? What is the percentage of male students?
15. The number of girls in the school chorus is 1.5 times that of boys. What is the proportion of boys to girls? What is the proportion of girls in the total number of chorus?
16. The ratio of boys to girls is 3:2. The number of boys is a fraction of the number of girls, and the number of girls is a fraction of the number of boys When building a road, the ratio of the completed length to the total length of the road is 5:11, the ratio of the completed length to the unfinished length is (): (), the length of the road to be built is a fraction of the unfinished length, and the unfinished length accounts for a fraction of the total length of the road
17. There are 40 students in the five-year class, including 22 boys, and girls account for the majority of the class______ %．
18. There are 22 male students and 24 female students in Grade 6 (1), so male students account for the majority of the class______ (expressed in the simplest fraction)
19. There are 24 boys in the second class of five years, 2 more than girls. What's the percentage of girls in the class?
20. There are 28 boys and 24 girls in class 6 (1) of Wuhan road primary school