- REBATES A telephone company offered its
customers a rebate of 20% of the cost of all long-
distance calls made in the month of July. One
customer’s long-distance calls for July are shown
below.
a. Find the total amount of the customer’s long-
distance charges for July.
b. How much will this customer receive in the form
of a rebate for these calls?
79. INSURANCE The cost to repair a car after a
collision was $4,000. The automobile insurance
policy paid the entire bill except for a $200
deductible, which the driver paid. What percent
of the cost did he pay?
80. FLOOR SPACE A house has 1,200 square feet on
the first floor and 800 square feet on the second floor.
a. What is the total square footage of the house?
b. What percent of the square footage of the house
is on the first floor?
81. CHILD CARE After the first day of registration,
84 children had been enrolled in a new day care
center. That represented 70% of the available slots.
What was the maximum number of children the
center could enroll?
82. RACING PROGRAMS One month before a stock
car race, the sale of ads for the official race program
was slow. Only 12 pages, or 60% of the available
pages, had been sold. What was the total number of
pages devoted to advertising in the program?
83. WATER POLLUTION A 2007 study found that
about 4,500 kilometers, or of China’s Yellow
River and its tributaries were not fit for any use. What
is the combined length of the river and its tributaries?
(Source:Discovermagazine.com)
84. FINANCIAL AID The National Postsecondary
Student Aid Study found that in 2008 about 14 million,
or , of the nation’s undergraduate students
received some type of financial aid. How many
undergraduate students were there in 2008?
85. GOVERNMENT SPENDING The circle graph
below shows the breakdown of federal spending for
fiscal year 2007. If the total spending was
approximately $2,700 billion, how many dollars were
spent on Social Security, Medicare, and other
retirement programs?
Social Security,
Medicare, and other
retirement
38%National
defense, veterans,
and foreign affairs
23%Net interest
on the debt
9%Physical,
human, and
community
development
9%Social
programs
19%Law enforcement
and general
government
2%Source: 2008 Federal Income Tax Form 104066 23 %
33 13 %
532 Chapter 6 Percent
Date Time Place called Min. Amount
Jul 4 3:48 P.M. Denver 47 $3.80
Jul 9 12:00 P.M. Detroit 68 $7.50
Jul 20 8:59 A.M. San Diego 70 $9.45
July Totals 185?- PRICE GUARANTEES To assure its customers
of low prices, the Home Club offers a “10% Plus”
guarantee. If the customer finds the same item
selling for less somewhere else, he or she receives
the difference in price, plus 10% of the difference.
A woman bought miniblinds at the Home Club for
$120 but later saw the same blinds on sale for $98
at another store.
a. What is the difference in the prices of the
miniblinds?
b. What is 10% of the difference in price?
c. How much money can the woman expect to
receive if she takes advantage of the “10% Plus”
guarantee from the Home Club? - ENLARGEMENTS The enlarge feature on a copier
is set at 180%, and a 1.5-inch wide picture is to be
copied. What will be the width of the enlarged
picture? - COPY MACHINES The reduce feature on a copier
is set at 98%, and a 2-inch wide picture is to be
copied. What will be the width of the reduced
picture? - DRIVER’S LICENSE On the written part of his
driving test, a man answered 28 out of 40 questions
correctly. If 70% correct is passing, did he pass the
test? - HOUSING A general budget rule of thumb is
that your rent or mortgage payment should be
less than 30% of your income. Together, a couple
earns $4,500 per month and they pay $1,260 in rent.
Are they following the budget rule of thumb for
housing?