There are 10 students in the initial selection. (7+3)
3 is 30% of 10 and 7 is 70% of ten.
30% of 420 = 126 girls
70% of 420 = 294 boys
There are 126 girls at the concert.
3+7=10 (3 and 7 are both ratio numbers)
420/10=42 (10 is the sum of both ratio)
3x42=126 girls (3 is ratio of girls)
7x42=294 boys (7 is ratio of boys)
100 boys
8
23
A ratio of boys to girls was 3 to 7 and there were 200 more girls than boys there would of been 150 boys that enrolled in school this year. This is a math problem.
There are 280 girls and 350 boys by ratio
100 boys
There is 48 Girls and 51 boys
23
2 boys for every 3 girls 8 boys / 2 boys = 4 times the original ratio 4 times original ratio x 3 girls = 12 girls
Since the ratio of boys to girls is 5 to 8, the total ratio parts is 5 + 8 = 13. To find how many boys are in the class, divide the total number of girls (40) by the total parts of the ratio (13), then multiply by the number of boys parts (5). Thus, there are 15 boys in the class.
160 boys. 162 boys.
3.
8
23
190 girls
Using the ratio provided, since the ratio of girls to boys is 7 to 5, the total ratio can be calculated as 7 + 5 = 12. Since there are 275 boys, the number of girls can be calculated as (7/12) * (275) = 159.375, which rounds to 159 girls.
If boys are first, I'm guessing 3 boys and 2 girls.