LESSON 4-1 TUNE-UP EXERCISES
Multiple-Choice
1. By the end of the school year, Terry had passed 80% of his science
tests. If Terry failed 4 science tests, how many science tests did Terry
pass?
(A) 12
(B) 15
(C) 16
(D) 18
2. A soccer team has played 25 games and has won 60% of the games it
has played. What is the minimum number of additional games the
team must win in order to finish the season winning 80% of the
games it has played?
(A) 28
(B) 25
(C) 21
(D) 18
3. In a movie theater, 480 of the 500 seats were occupied. What percent
of the seats were NOT occupied?
(A) 0.4%
(B) 2%
(C) 4%
(D) 20%
4. In a certain mathematics class, the part of the class that are members
of the math club is 50% of the rest of that class. The total number of
math club members in this class is what percent of the entire class?
(A) 20%
(B) 25%
(C) 33 %
(D) 50%
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5. After 2 months on a diet, John’s weight dropped from 168 pounds to
147 pounds. By what percent did John’s weight drop?
(A) 12 %
(B) 14 %
(C) 21%
(D) 25%
6. If 1 cup of milk is added to a 3-cup mixture that is flour and milk,
what percent of the 4-cup mixture is milk?
(A) 80%
(B) 75%
(C) 70%
(D) 65%
7. If the result of increasing a by 300% of a is b, then a is what percent
of b?
(A) 20%
(B) 25%
(C) 33 %
(D) 40%
8. After a 20% increase, the new price of a radio is $78.00. What was the
original price of the radio?
(A) $15.60
(B) $60.00
(C) $62.40
(D) $65.00
9. After a discount of 15%, the price of a shirt is $51. What was the
original price of the shirt?
(A) $44.35
(B) $58.65
(C) $60.00
(D) $64.00
10. Three students use a computer for a total of 3 hours. If the first student
uses the computer 28% of the total time, and the second student uses
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the computer 52% of the total time, how many minutes does the third
student use the computer?
(A) 24
(B) 30
(C) 36
(D) 42
11. In an opinion poll of 50 men and 40 women, 70% of the men and 25%
of the women said that they preferred fiction to nonfiction books.
What percent of the number of people polled preferred to read fiction?
(A) 40%
(B) 45%
(C) 50%
(D) 60%
12. In a factory that manufactures light bulbs, 0.04% of all light bulbs
manufactured are defective. On the average, there will be three
defective light bulbs out of how many manufactured?
(A) 2,500
(B) 5,000
(C) 7,500
(D) 10,000
13. A used-car lot has 4-door sedans, 2-door sedans, sports cars, vans, and
jeeps. Of these vehicles, 40% are 4-door sedans, 25% are 2-door
sedans, 20% are sports cars, 10% are vans, and 20 of the vehicles are
jeeps. If this car lot has no other vehicles, how many vehicles are on
the used-car lot?
(A) 300
(B) 400
(C) 480
(D) 600
14. Jack’s weight first increased by 20% and then his new weight
decreased by 25%. His final weight is what percent of his beginning
weight?
(A) 95%
(B) 92.5%
(C) 90%
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(D) 88.5%
15. The price of a stock falls 25%. By what percent of the new price must
the stock price rise in order to reach its original value?
(A) 25%
(B) 30%
(C) 33 %
(D) 40%
VOTING POLL
Candidate A 30%
Candidate B 50%
Undecided 20%
16. The table above summarizes the results of an election poll in which
4,000 voters participated. In the actual election, all 4,000 of these
people voted, and those people who chose a candidate in the poll
voted for that candidate. People who were undecided voted for
candidate A in the same proportion as the people who cast votes for
candidates in the poll. Of the people polled, how many voted for
candidate A in the actual election?
(A) 1,420
(B) 1,500
(C) 1,640
(D) 1,680
17. A car starts a trip with 20 gallons of gas in its tank. The car traveled at
an average speed of 65 miles per hour for 3 hours and consumed gas
at a rate of 30 miles per gallon. What percent of the gas in the tank
was used for the 3-hour trip?
(A) 32.5
(B) 33.0
(C) 33.5
(D) 34.0
Grid-In
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1. A store offers a 4% discount if a consumer pays cash rather than
paying by credit card. If the cash price of an item is $84.00, what is
the credit-card purchase price of the same item?
2. During course registration, 28 students enroll in a certain college
class. After three boys are dropped from the class, 44% of the class
consists of boys. What percent of the original class did girls
comprise?
3. A high school tennis team is scheduled to play 28 matches. If the team
wins 60% of the first 15 matches, how many additional matches must
the team win in order to finish the season winning 75% of its
scheduled matches?
4. In a club of 35 boys and 28 girls, 80% of the boys and 25% of the
girls have been members for more than 2 years. If n percent of the
club have been members for more than 2 years, what is the value of
n?
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