Ok so 20% is woman 10% is girls and 30% are boys which would be 60% overall. So now you're missing 40 percent which is 3600. To find how many are there in 1 percent you do 3600 divided by 40 which is 90. Then you multiply by 100 because you're trying to find how many people are that the game overall and 100% means all of it. Then by multiplying it you'd get 9,000. There are 9,000 people at the match
