Study the given table and answer the question that follows. The table shows the number of donuts sold by three different stores in five different months. Store Month July August September October November P 400 350 263 125 420 Q 660 170 465 905 180 R 342 182 700 960 235 What is the ratio of the number of donuts sold by stores P and R together in October to the total number of donuts sold by stores Q and R together in the same month?

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