In a fitness club, the ratio of male and female is 3:2. Base on their ability level, they are group into 3 different groups, A,B
, and C, and the ratio of members in A, B, and C is 10:8:7. In group A, the ration of male to female is 3:1, and in group B, the ratio is 5:3, what is the ratio of male to female in group C?
The absolute value returns the "positive version" of a number. In other words, if is already positive, then . Otherwise, if is negative, then the absolute value changes its sign, so that it returns positive: .
So, in this case, we have to plug the required values for in the expression . Then, if the result is positive we're ok, otherwise we discard the negative sign.