Math
posted by Angie on .
There are 1170 students in a school. The ration of girls to boys is 23 : 22. The system below describes..?
relationships between the number of girls and the number of boys.
g+b=1170
g/b=22/23
a. Solve the proportion for g.
b. Solve the system.
c. How many more girls are there than boys?

ratio
a. well...first you divide 1170 by 45(I got 45 by adding the amount of the ratio 23+22) and you get 26.so then you multiply 26 by 23 to get the number of girls. you mulitply 26 by 22 to get the number of boys. so G = 498
b. above
c. there are 26 more girls than boys 
what's the proportion when it's solved, using g/b=22/23?