Test Prep I DS -- 30

[lisayang83]

At least 10% of the people in the county who are 65 years or older employed?

1. In country x, 11.3% of the populaton is 65 years or older
2. Of the population that is 65 or older, 20% of the men and 10% of the woman are employed

Ans. B.

But neither the number of men and woman, nor the % of men and woman are given, how can it answer the question?!

plz help, thx!

[dibert8]

(2) for men, 20% > 10% are employeed, for women, 10% = 10% are employeed => at least 10% of (men + women) > 65 yr are employeed.

[lisayang83]

...有點 confused..
it asks for 10% of the population, so 20% of the Male Population and 10% of the Female Pop. 就會大於 10% of the pop?
這需要 代數字 去檢查嗎?
謝謝

[dibert8]

可以極端情況來說明.
假設 65 歲以上全是女性 => 10% 受雇,這是最少受雇的情形,所以至少有 10% 受雇.