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Gwd-18-33

说来惭愧,但这题答案为A,我实在算不出来

If Diana’s stamp collection, of the stamps are Canadian, and of the Canadian stamps were issued before 1940. If 192 stamps in Diana’s collection are Canadian stamps that were issued in 1940 or later, how many stamps in her collection are not Canadian?

A. 84

B. 88

C. 96

D. 104

E. 112

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GWD18M中本题我是做出来了,如下:

设邮票总数s,4s/5*3/7=192 s*1/5=112

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这么说你选的答案是E E是正确答案

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