Reminds me of the well-known type of question in introductory calculus: Q: "A population of bacteria in a petri-dish doubles every hour, after 24 hours the pet

Reminds me of the well-known type of question in introductory calculus: Q: "A population of bacteria in a petri-dish doubles every hour, after 24 hours the petri-dish reaches 100% saturation. At what time did the petri-dish reach 50% saturation?" A: 23 hours.