Keith weighs 20 kg more than beth, while henry weighs 30kg less than twice as much as beth. if keith and henry weigh the same, how much does beth weigh? (in kg)

The four students in the table below each recorded the time and distance traveled while exercising. exercising distance (miles) time (minutes) gia 2 30 harris 5 50 ian 3 40 jackson 4 80 which list ranks the students from fastest walker to slowest walker? jackson, gia, ian, harris harris, jackson, ian, gia harris, ian, gia, jackson jackson, harris, ian, gia