8 55% of students in a school are boys. a What is the ratio of boys to girls?
b How many boys and how many girls are there if the school has 800
students?

Ratio = 11:9

Boys = 440

Girls = 360

Explanation:

Given that, in a school,

Total number of students = 800

Also,

Percent of boys = 55%

Therefore, number of boys = 55% of 800

No. of boys = 55/100 x 800

No. of boys = 55 x 8 =

No. of boys = 440

Therefore, we will get,

No. of girls = (800-440)

No. of girls = 360

Therefore, we will get,

Ratio of boys to girls = 440/360

Ratio = (40*11)/(40x9)

Ratio = 11/9

Hence, the ratio of boys to girls is 11:9 and number of boys and girls is 440 and 360 respectively.

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !