Answer:24/8 cups of water
Explanation:
I think u just add it up like, 1/8. there were 6 people that did 1/8 so 6/8 cups. or 3/4.
then 2 people did 1/4 so, that is 2/4, or 1/2. so currently 5/4 cups of water.
3 people did 3/8, so 9/8. 10/8 plus 9/8=19/8
19/8plus 5/8 = 24/8.
i dont know if correct but still try on ur own.