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From a lab result to a replacement plan
The prompt
Fictional and illustrative. Your PhD found that a delivery van battery loses 2 percent of its capacity every 100 full charges. A delivery firm in India charges each van once a day. It replaces a battery when it falls to 80 percent of its first capacity. Assume the loss is steady. When should the firm plan to replace its batteries?
Your interviewer will share data as you ask for it. Ask clarifying questions, state a hypothesis, then lay out your structure out loud before you calculate.
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