The first bottle of oil uses (1/3), the second bottle of oil uses (1/3) kg, and the rest is equal, then the first bottle of oil is more <$> B. How many kg are the two bottles of oil
第一瓶油用去(1/3)，第二瓶油用去(1/3)kg，剩下的部分相等，则第一瓶油多<$>B.两瓶油都是多少kg
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