In the coed softball league, the male to female ratio is 6:6. if there are 160 players in the league, how many are female?

Since 6/6 is 1, we know that there are 1 times as many males as there are females (meaning that there are as many males as females.

If m (males) + f (females) = 160 and m=f, then we can plug f in for m to get f+f=160=2f. Dividing both sides by 2, we get f=80