Bunuel wrote:

If 95% of the residents of Coral Estates live in private homes and 40% of these live in air-conditioned homes, what percent of the residents of Coral Estates live in air-conditioned homes?

(A) 3%

(B) 3.8%

(C) 30%

(D) 38%

(E) 40%

Assume 100 people. 95% of them live in private homes.

(.95)(100) = 95 people who live in private homes

And 40 percent of these people (the 95) have AC.

\((\frac{4}{10}*95)=(\frac{2}{5}*95)=19*2= 38\) people who both live in private homes and have AC

Those 38 are what percent of all residents? There are 100 residents.

\((\frac{38}{100}*100)=(.38*100) = 38\) percent

Answer D

_________________

In the depths of winter, I finally learned

that within me there lay an invincible summer.

-- Albert Camus, "Return to Tipasa"