Complete parts a) and b). a) Human bones make up about 0.19 of a person's body weight. How much do the bones of a 140 lb person weigh? b) Muscles make up about 0.4 of a person's body weight. How much do the muscles of a 140 lb person weigh? The bones of a 140 lb person weigh (Type an integer or a decimal.) lbs. The muscles of a 140 lb person weigh lbs. (Type an integer or a decimal.)