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The most common ratio of oil to vinegar is 3:1.

About 70 percent of water used in Buckeye is for outdoor landscaping, while 30 percent is for indoor use, said Whitler—a common ratio in arid regions.

Is that a pretty common ratio?

In early 2010, many analysts thought the postcrisis Tier 1 common ratio requirement for the biggest banks would be set at 7%.

Among the big banks, Citi had the highest tier one common ratio.