Mrs. fowler has 28 students in her class, and 16 of them are boys.
what is the ratio of girls to boys?
a.
4 : 3
b.
3 : 4
c.
4 : 11
d.
3 : 11

We subtract 28 - 16 and get the number of girls 
so lets do that 
28 - 16 = 12 
now we know the unsimplified ratio os 12 to 16 
simplifed girls 12 ÷ 4 = 3 
simplified boys 16 ÷ 4 = 4 
since it says (girls to boys) we put girls first then boys
so it would become 3 : 4 
Or the answer is B.) 3 : 4 

5/8 beds for each square yard