HAIR Math

Sarah always ridicules me when she gets her hair cut and I don't notice. She says she always notices when I get my hair cut. Being the engineer that I am, I turned to math to explain why. Sarah's hair was twenty inches long. She got four inches cut off. My hair was three inches long and I got two inches cut off. Sarah had twice the length or fifty percent more hair cut off but that's only twenty percent of her total hair. I had 66.66% cut off of my total, a much larger difference.