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Bunuel
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We have the price of all shoes sold. We really just need to find shoes in stock to find revenue.

(1) We can back calculate stock by seeing that at the end of Sunday, the store had 2/3rd of its total stock, and this value was 600. So 3/2 * 600 = 900 total stock, and they sold 300 pairs this weekend. Hence SUFFICIENT

(2) This tells us the total stock outright which we wanted. So SUFFICIENT

Hence, D
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