Drinking water can help you lose weight, whether you're restricting your calories or not. Consuming 2 cups of water before a meal helped a group of obese adults lose 2 pounds over a 12-week period without making any other changes to their usual intake, according to a 2015 clinical study published in Obesity.
How many tea bags should you use to make a half gallon of iced tea? One gallon is about 128 ounces, so if one tea bag is good for 10 oz  of water, then about 10 teabags is good for a gallon. Start with 10  and adjust accordingly with water.
Since 1 pound is equal to 16 ounces, you need to divide (181 cups per pound) by 16 to get the total cups per ounce. This equation will tell you that there are 11 cups per ounce of tea. Once you know this, the equation is: (Cost of tea) / (Ounces of tea * 11) = Cost Per Cup.