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浓度百分比同型源自真题 2007-17✓ 已校验
A mixture of 40 liters of fruit punch is 20% mango, 35% apple, and 45% water. Then 10 liters of mango are added to the mixture. What is the percent of mango in the new mixture?
一桶 40 升的水果宾治含 20% 芒果、35% 苹果和 45% 水。然后向混合物中加入 10 升芒果。新混合物中芒果所占的百分比是多少？