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by smclean23 » Fri Jul 18, 2008 5:20 pm
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?

1. W=w+5
2.1/10<W/774<1/9
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Source: — Data Sufficiency |
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by Mani_mba » Fri Jul 18, 2008 7:51 pm
IMO C.

a) it states 5/W should be less than .1
b) it states 77.4<W<86

Combining these two, we could say the decrease is less than 10%

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by raunekk » Fri Jul 18, 2008 9:40 pm
IMO C.

a) it states 5/W should be less than .1
b) it states 77.4<W<86

Combining these two, we could say the decrease is less than 10%
Perfect method.


IMO C
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