Making operations better, and planning for what can go wrong

Where a bread line in Cairo loses its minutes

Prints the prompt and every part you have revealed so far.

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The prompt

A bread line at a bakery in Cairo, Egypt is planned to run 600 minutes a day. At full speed it bakes 2 trays a minute (0.5 minutes a tray). Yesterday it stopped for 60 minutes (a breakdown and a change of recipe), baked 900 trays, and threw away 60 burnt or broken trays. What is its OEE, and where do the minutes go? (Fictional bakery, illustrative figures.)

Practice with a partner

1. Send the interviewer link to a friend. They read the case aloud and hold the answers.

2. You open the candidate view: you see only the prompt, a timer and a notes box.

3. Speak the case out loud. Your partner shares data when you ask, then scores you with the rubric.

Interviewer view
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Candidate view
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Your turn first

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Clarifying questions, with the interviewer's answers

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