A store has five shelves and the average weekly sale of the store is Tk. 30,000. Shelf 1 accounted for 1/4 of the store's average weekly sales and stores 2 and 3, each accounted for 2/3 as much as shelf 1. If shelf 4 alone accounted for as much as shelf 1 then, which of the following could have been the average weekly sales of shelf 5 for the store?

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সঠিক উত্তর: । ব্যাখ্যা: Average weekly sales যদি Tk. 30,000, Shelf 1 এর sales $= 30,000/4 = Tk. 7,500$. Shelf 2 and 3 এর combined sales $= 2\times7,500\times2/3 = Tk. 10,000$. Shelf 4 এর sales $= Tk. 7,500$. Shelf 5 এর sales $= 30,000 - 7,500 - 10,000 - 7,500 = Tk. 5,000$.