A certain bakery that sells donuts and bagels reported that the revenue from donut sales in 2016 was up 12 percent from 2015 and the revenue from bagel sales in 2016 was down 3 percent from 2015. If total revenues from donut and bagel sales in 2016 were up 2 percent from 2015, what is the ratio of revenues from donut sales to bagel sales in 2015?
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数学PS
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