Test 7 / 20
A small frying pan can hold two eggs at the same time. It takes 2 minutes to cook one side of an egg. What is the shortest possible time to fry three eggs completely on both sides?
The Purpose: This question exercises your Resource Optimization and Efficiency Logic. It challenges the brain to move beyond "linear thinking" (cooking in pairs) and discover a way to keep the pan fully utilized at all times to save time.
The Breakdown: If you cook two eggs fully and then cook the third one alone, you waste the pan's capacity. The key is to swap the eggs so that the pan always contains two eggs.
The Calculation: 1. 0–2 mins: Put in Egg A and Egg B. Fry side 1 of both.
2. 2–4 mins: Take out Egg B, flip Egg A, and put in Egg C. Fry side 2 of A and side 1 of C. (Egg A is done!)
3. 4–6 mins: Put Egg B back in (side 2) and flip Egg C (side 2).
Total: 6 minutes.
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