Question

the ratio of girls to boys at a school dance was 5:2 if there were 70 girls at the dance, How many boys were at he dance? "use proportion and either and equivalent fraction to solve

Answer 1

The answer is 67 because
5-2=3
70:67
67+3=70

Answer 2

this is saying that 5/2=70/x in order to solve you make the equation x=70/(5/2) which would be 140/5 or 28 boys