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Interview prep / Brainteaser/Logic

Grilling four steaks on a three-steak grill

Question

Each side of a steak needs exactly one minute on the grill, and a steak is done only when both sides are cooked. Your grill fits at most three steaks at once. What is the shortest time in which four steaks can be fully cooked?

Short answer

3 minutes. There are 88 sides to cook and at most 33 per minute, so at least 33 minutes are needed. Schedule: minute 1 cook side 1 of A, B, C; minute 2 cook side 2 of A, B and side 1 of D; minute 3 cook side 2 of C and D.

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