Page 404 - Basic College Mathematics with Early Integers

S E C T I O N 5.3 I PROPORTIONS AND PROBLEM SOLVING 381

33. A student would like to estimate the height of the 34. The length of the Statue of Liberty’s index finger
Statue of Liberty in New York City’s harbor.The is 8 feet while the height to the top of the head is
length of the Statue of Liberty’s right arm is 42 feet. about 111 feet. Suppose your measurements are
The student’s right arm is 2 feet long and her height proportionally the same as this statue and your
1 height is 5 feet.
is 5 feet. Use this information to estimate the
3
a. Use this information to find the proposed length of
height of the Statue of Liberty. How close is your
your index finger. Give an exact measurement and
estimate to the statue’s actual height of 111 feet,
then a decimal rounded to the nearest hundredth.
1 inch from heel to top of head? (Source: National
b. Measure your index finger and write it as a
Park Service)
decimal in feet rounded to the nearest
hundredth. How close is the length of your index
finger to the answer to part a? Explain why.

42
feet 2
5a feet
feet

35. There are 72 milligrams of cholesterol in a 3.5-ounce 36. There are 76 milligrams of cholesterol in a 3-ounce
serving of lobster. How much cholesterol is in 5 ounces serving of skinless chicken. How much cholesterol is
of lobster? Round to the nearest tenth of a milligram. in 8 ounces of chicken? (Source: USDA)
(Source: The National Institutes of Health)

37. Trump World Tower in New York City is 881 feet tall 38. In 2009 in the United States, approximately
and contains 72 stories.The Empire State Building 178 million of the 250 million cars and light trucks
contains 102 stories. If the Empire State Building has in service had driver-side airbags. In a parking lot
the same number of feet per floor as the Trump containing 750 cars and light trucks, how many
World Tower, approximate its height rounded to the would be expected to have had driver-side air bags?
nearest foot. (Source: skyscrapers.com) (Source: Insurance Institute for Highway Safety)

39. Medication is prescribed in 7 out of every 10 hospital 40. Currently in the American population of people
emergency room visits that involve an injury. If a aged 65 years old and older, there are 145 women for
large urban hospital had 620 emergency room visits every 100 men. In a nursing home with 280 male
involving an injury in the past month, how many of residents over the age of 65, how many female
these visits would you expect included a prescription residents over the age of 65 would be expected?
for medication? (Source: National Center for Health (Source: U.S. Bureau of the Census)
Statistics)

41. One out of three American adults has worked in the 42. One pound of firmly packed brown sugar yields
restaurant industry at some point during his or her 1
2 cups. How many pounds of brown sugar will be
life. In an office of 84 workers, how many of these 4
people would you expect to have worked in the required in a recipe that calls for 6 cups of firmly
restaurant industry at some point? (Source: National packed brown sugar? (Source: Based on data from
Restaurant Association) Family Circle magazine)