Bakery Planning: Batch Release Times and a Single Oven Queue

Bakery Planning: Batch Release Times and a Single Oven Queue

Original quantitative topic practice in English. All 24 questions are included in a shuffled order. Each question supplies its own data and model assumptions; use only those assumptions. Choose one answer. Practice target: 20/24, not an official examination pass mark. Keep full intermediate precision. These exercises cover the calculation scope in the title; they do not constitute a full Red Seal examination, trade qualification, site design or operating specification.
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Four batches become ready for one oven at times 0, 20, 40 and 60 minutes from the start. Each occupies the oven for 25 minutes, including turnaround. Process batches in order without overlap; a batch starts when both it and the oven are ready. No other waiting or process steps are included. Calculate the finish time of batch 1 in minutes from start. Keep intermediate values unrounded; round the final answer to 4 decimal places if needed.