Answer:
2 hours
Explanation:
8 cup = 8 fl oz
4 cups × (8 fl oz)/(cup) = 32 fl oz
She started with 32 fluid ounces.
After 1 hour, she drank 10 fl oz. She had 22 fl oz left.
After the 2nd hour, she drank 10 fl oz. She had 12 fl oz left.
Answer: 2 hours