In a certain class, the ratio of girls to boys was 5 to 4. if there are 80 boys in the class, how many students are there in all?

there are 180 students in the entire class

2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.