Divide 4 1/2 lb by 6 to determine the share given to each of the 6 hikers:
4 1/2 divided by 6 is the same as 9/2 divided by 6, or
9 1 9
--- * ---- = ------- = 3/4 lb. (answer)
2 6 12
Check by mult. 3/4 lb by 6: 18/4 = 9/2 = 4 1/2 lb. This is correct.