- CAR INSURANCE A student paid a car insurance
premium of $420 every three months. Then the
premium dropped to $370, because she qualified
for a good-student discount. What was the percent
of decrease in the premium? Round to the nearest
percent. - BUS PASSES To increase the number of riders, a bus
company reduced the price of a monthly pass from
$112 to $98. What was the percent of decrease in the
cost of a bus pass? - BASEBALL The illustration below shows the
path of a baseball hit 110 mph, with a launch angle
of 35 degrees, at sea level and at Coors Field, home
of the Colorado Rockies. What is the percent of
increase in the distance the ball travels at Coors
Field?
Source: Los Angeles Times,September 16, 1996- EARTH MOVING The illustration below shows
the typical soil volume change during earth moving.
(One cubic yard of soil fits in a cube that is 1 yard
long, 1 yard wide, and 1 yard high.)
a. Find the percent of increase in the soil volume as
it goes through step 1 of the process.
b. Find the percent of decrease in the soil volume as
it goes through step 2 of the process.
Denver
Sea level10012080
60Vertical distance (ft)40
20
0
0 100 200
Horizontal distance (ft)300 440484- REAL ESTATE After selling a house for $98,500, a
real estate agent split the 6% commission with another
agent. How much did each person receive? - COMMISSIONS A salesperson for a medical
supplies company is paid a commission of 9% for
orders less than $8,000. For orders exceeding $8,000,
she receives an additional 2% in commission on the
total amount. What is her commission on a sale of
$14,600? - SPORTS AGENTS A sports agent charges her
clients a fee to represent them during contract
negotiations. The fee is based on a percent of the
contract amount. If the agent earned $37,500 when
her client signed a $2,500,000 professional football
contract, what rate did she charge for her services? - ART GALLERIES An art gallery displays paintings
for artists and receives a commission from the artist
when a painting is sold. What is the commission rate if
a gallery received $135.30 when a painting was sold
for $820? - WHOLE LIFE INSURANCE For the first 12 months,
insurance agents earn a very large commission on the
monthly premium of any whole life policy that they
sell. After that, the commission rate is lowered
significantly. Suppose on a new policy with monthly
premiums of $160, an agent is paid monthly
commissions of $144. Find the commission rate. - TERM INSURANCE For the first 12 months,
insurance agents earn a large commission on the
monthly premium of any term life policy that they
sell. After that, the commission rate is lowered
significantly. Suppose on a new policy with monthly
premiums of $180, an agent is paid monthly
commissions of $81. Find the commission rate. - CONCERT PARKING A concert promoter gets
a commission of of the revenue an arena
receives from parking the night of the performance.
How much can the promoter make if 6,000 cars are
expected and parking costs $6 a car? - PARTIES A homemaker invited her neighbors to a
kitchenware party to show off cookware and utensils.
As party hostess, she received 12% of the total sales.
How much was purchased if she received $41.76 for
hosting the party?
33 13 %
Existing
parking
1,000,000 ft^2Proposed
new parking1,000 ft300 ft550 Chapter 6 Percent
1.0 cubic yard in
natural condition
(in-place yards)1.25 cubic yards
after digging
(loose yards)0.80 cubic yard
after compaction
(compacted yards)Step 11.25Step 21.0 0.80Source:U.S. Department of the Army- PARKING The management of a mall has decided
to increase the parking area. The plans are shown in
the next column. What will be the percent of increase
in the parking area when the project is completed?