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题目内容
A certain museum contains a total of 1,500 works of art, of which 800 are paintings. Of the twentieth-century works of art in the museum, 40 percent are paintings. Of the works of art that are not paintings, 490 are not twentieth-century works of art.
How many twentieth-century works of art does the museum contain?
How many twentieth-century works of art does the museum contain?
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· 相关考点
6.1.3 双重叠应用题
6.1.3 双重叠应用题
以上解析由 考满分老师提供。