91Ó°ÊÓ

Solve each application involving percents. Hospitals \(18 \%\) of hospital patients stay for less than 1 day. If 1,008 patients in January stayed for less than 1 day, what total number of patients did the hospital treat in January?

Solve. Customer satisfaction one-third of the movie audience left the theater in disgust. If 78 angry patrons walked out, how many were there originally?

If 2,484 union members represent \(90 \%\) of a factory's work force, how many workers are employed?

Out of \(\$ 237,000\) donated to a certain charity, \(\$ 5,925\) is used to pay for fund-raising expenses. What percent of the donations is overhead?

Solve. After a 3 -for- 2 stock split, each shareholder will own 1.5 times as many shares as before. If 555 shares are owned after the split, how many were owned before?

Solve. After a 2 -for- 1 stock split, each shareholder owned twice as many shares as before. If 2,570 shares are owned after the split, how many were owned before?

Explain what it means for a number to satisfy an equation.

The Ahmes papyrus contains in The Perspective this statement: \(A\) circle nine units in diameter has the same area as a square eight units on a side. From this statement, determine the ancient Egyptians' approximation of \(\pi .\)