Answer:
3936 people
Step-by-step explanation:
Water Tank = 9840 liters of water.
Now divide the total amount of water available by the amount of water needed per person to get the number of people that can consume all the water:
9840 Liters / (2.5 Liters/ 1 person) =
1 person * 9840 Liters / 2.5 Liters =
1 person * 9840/2.5 = 3936 people