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Mathematics, 18.09.2021 09:10 EllaLovesAnime

clerk in a bookstore has 90 min at the end of each workday to process orders received by mail or on voice mail. The store has found that a typical mail order brings in a profit of $30 and a typical voice-mail order brings in a profit of $40. Each mail order takes 10 min to process and each voice-mail order takes 15 min.

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