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نصف العملاء العشرين، وهو 1/2 * 20 = 10، اشترى 20 وعاءًا لكل منهم، وحصلوا على 2 مقابل كل 10.
إجمالي عدد أوعية المكافأة التي حصل عليها كل عميل اشترى 20 وعاءًا هو 2 + 2 = 4
إذا اشترى 10 عملاء 20 وعاءًا، أعطى هاورد 4 * 10 = 40 وعاءًا كmakafa.
إجمالي عدد أوعية المكافأة المتبقية هو 70 - 40 = 30
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