Answer:
look below
Step-by-step explanation:
I'll go in order from top to bottom





Ok, so 11:9
11-9 = 2
which means that 124= 2:1
124/2 = 62
so 62:0
now 11 x 62= 682
9 x 62= 558
so the ratio is 682:558
now 682 + 558 = 1,240
There are 1,240 total students in the school. 682 boys and 558 girls
I think the right answer is F
To write 325/16 as a decimal you have to divide the numerator by the denominator of the fraction. i divided 325/16 and got 20.3125