Swimming complete 62%

Now I know 62% of the main four swimming strokes. I fully mastered backstroke and freestyle I know half of butterfly and none of breaststroke. Ya wanna do the math.? Here it is fully mastered is 100% two of them are half is 50% and none is 0%. 100 plus 100 equals 200 + 50 = 250 then don't add more because 0% is 0. 250 is 2 and 1/2 reduce that into quarters 25% two of them is 50% and have is 12% add then you get 62%. Pheeeeeeeeeeewwwwwwww!