追加問題。

A total of 774 doctorates in mathematics were granted to US citizens by American univ. in the 72-73 school year, and W of these doctorates were granted to women. The total of such doctorates in the 86-87 school yaer was 362, and w of these were granted to women. If the number of doctorates in mathematics granted to female citizens of the US by American univ. decreased from 72-73 school year to the 86-87 school year, was the decrease less than 10 percent?

(1) 1/10<W/774<1/9
(2) W=w+5

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