if there are 125 more girls than boys and the number of boys is 7/12 the number of girls how many girls attend the school

Question

i dont know how to solve it and if its multiplication or adding or whatever

Answer 1

G = 125 + B

B = (7/12)G

G = 125 + 7G/12

12G = 125(12) + 7G

5G = 1500

G = 300 girls

B = 7(300)/12 =175 boys