There are 1,400 students in a school.The number of girls is 3/4 the number of boys.How many students are in the other grade levels if 1/6 of the girls and 1/5 of the boys in first grade?

Answer 1

g = 3/4 b
g+b=1400

7/4 b = 1400
b = 800
g = 600

1st grade boys: 1/5 * 800 = 160
1st grade girls: 1/6 * 600 = 100
total 1st grade: 260
others: 1140

Answer 2

THANK YOU VERY MUCH :)

Answer 3

The number of pupils in the sixth grade in one of schools is 260, the ratio between the number of boys to girls is 6:7 find the number of each of boys and girls in this grade