[email protected] wrote:Are at least 10% of the people in country X who are 65 yrs old or older employed?
a. In X, 11.3% of population is 65 years or older
b. In X, of the polulation 65 years or older, 20% of mean and 10% of women are employed.
No real math is needed here.
Statement 1: In country x, 11.3 percent of the population is 65 years old or older.
No information about who is employed.
Insufficient.
Statement 2: In country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.
Plot the percentages on a number line:
women 65 or older (10%)---------women + men 65 or older-------(20%) men 65 or older
As the number line shows, the percentage in the MIXTURE (women + men 65 or older) must be BETWEEN 10% and 20%.
Thus, at least 10% of the people 65 or older are employed.
Sufficient.
The correct answer is
B.
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