The ratio of male to female at a cinema was 7:9. How many male were there if there were 630 female

Answer 1

Let's assume that the ratio of males to females at the cinema is 7x:9x (where x is a common factor).
We are told that there were 630 females, so the ratio 9x represents 630.
To solve for x, we set up the following equation: 9x = 630.
Simplifying the equation, we find that x = 630/9 = <<630/9=70>>70.
Since the ratio of males to females is 7x:9x, the ratio of males to females is 7(70):9(70) = 490:630.
Therefore, there were 490 males at the cinema.