Data Sufficiency

A total of 774 doctorates in mathematics were granted to United States citizens by American universities in the 1972-1973 school year, and W of these doctorates were granted to women. The total of such doctorates in the 1986-1987 school year was 362, and w of these were granted to women. If the number of doctorates in mathematics granted to female citizens of the United States by American universities decreased from the 1972-1973 school year to the 1986-1987 school year, was the decrease less than 10 percent?

a) 1/10 < W/774 < 1/9

b) W = w + 5

IMO C

Stmt 1 -> 77.4 < W < 86. Does not tell anything about w so NOT SUFF

Stmt 2 -> W-w = 5. But we don't know anything about W so NOT SUFF

Together -> max percentange will be when W is min. So calculating percentage
5*100/77.4 = 6.46 % < 10% SUFF

What's the OA?

yup answer is C.

Thanks.