Give the step-by-step reasoning process and then the final answer. Jack makes his own cold brew coffee. He makes it in batches of 1.5 gallons. He drinks 96 ounces of coffee every 2 days. It takes 20 hours to make coffee. How long does he spend making coffee over 24 days?
He makes it in batches of 1.5 * 128 = 192 ounces. He drinks 96 / 2 = 48 ounces of coffee a day. So he drinks the coffee in 192 / 48 = 4 days. So in 24 days he makes 24 / 4 = 6 batches. That means he spends 6 * 20 = 120 hours making coffee.
The final answer: 120.