A
If there are 270 8th graders, 180 7th graders, and 210 6th graders. What percent of the student population are 8th graders?
40.9%
Total amount of students: 270 + 180 + 210 = 660
270 = % (660)
At Brookpark Middle School, about 25% of the students have curly hair. If there are 643 students in the school how many have curly hair?
160.75, which equals 160 students. There can't be 0.75 of a student so you round down.
P = .25 (643)
In a class of 20 students, 15% play in the school orchestra. How many students do not play in the school orchestra?
17.
P = .15 (20) = 3 students play in orchestra
Students who do not play in orchestra =
Total students - students in orchestra
20 - 3 = 17 students
On a 75-question test, Maureen answered 84% correctly. How many questions did she NOT answer correctly?
12 questions. Since she answered 63 correctly, you have to subtract that from 75 and you get the answer.
P = .84 (75) = 63 questions answered correctly
Questions answered incorrectly = 75 - 63 =
12 questions
In a school, 12% of all students participate in the Bowling Club. If there are 500 students in the school, how many do NOT participate in the Bowling Club?
440 students. There are 60 students that participate in the club and that number must be subtracted from the total to find the answer.
P = .12 (500) = 60 students participate
Amount that does not participate = 500 - 60 =
440 students
Suppose 42 out of 60 people read the newspaper everyday. What percent of the people DO NOT read the newspaper every day.
30%.
42 = % (60)
= 70% of people read newspaper every day
Percent of people who don't read paper everyday = 100% - 70% = 30% of people
In 1980, about 72% of the men in the United States worked. The actual number of unemployed men at that time was 57,186. How many total men were in the United States in 1980?
204,235 total men
% of unemployed men: 100% - 72% = 28%
57,186 = .28 (w)
= 204, 235.7143
round to 204,235 (can't have. .7143 man)
On the first day of March, 94 of 1175 students at Brown Junior High were absent. What percent of the students were in school?
92%.
94 = % (1175) = 8% of students absent
100% - 8% = 92% of students in school.
Some doctors recommend that no more than 30% of a person's daily calories come from fats. Following this recommendation, if you eat 2,400 calories a day, what is the maximum amount that should NOT come from fats?
1,680
100% - 30% = 70% not from fats
P = .70 (2400) = 1,680 calories NOT from fat.
The Knicks played 8 games. If they lost 2 games and there were no ties, what percent of the games played did the team win.
75%
Amount of games won = 8 - 2 = 6 games
6 = % (8)
= 75%
On Saturday, 78% of the breakfast customers at Mark's restaurant ordered orange juice. If 33 customers did not order orange juice, how many breakfast customers were there in all?
150
Percentage of customers who did not order juice =
100% - 78% = 22%
Total amount of customers = 33 = .22 (w)
The 42 students who play wind instruments represent 75% of the students who are in band. How many students are in band?
56
42 = .75 (w)
= 56 students total
Last year the Midas Middle School cafeteria served pizza on 12% of the school days. If there were 175 school days, how many times was pizza served?
21 days
P = .12 (175)
= 21 days
A quality control inspector found that 3 out of every 45 radios produced on a certain assembly line were defective. What percent of the radios were defective?
6.666666666666666666666666666.........%
3 = % (45)
= 6.6666666666666666666666666.........%
Julie has read 27 pages out of an eighty page book. What percent of the pages has she read? What percent of the book does Julie still have left to read?
Julie has read 33.75% of the pages
Julie still has 66.25% of the book to read
27 = % (80) = 33.75%
53 = % (80) = 66.25%
In a recent survey, 36 people, or 20% of the people surveyed, said they had never been out of the continental United States. How many people were surveyed?
180
36 = .20 (w)
= 180 people
A real-estate agent receives 3% commission on property the agent sells. What is the agent's commission for selling a house for $118,000?
$3,540
P = .03 (118,000)
= $3,450
Michael is a video salesman. On each sale, he earns a commission of 12%. One of his customers bought a TV for $550 and a VCR for $400. How much did he earn in commissions?
$114
Commission on TV: P = .12 (550) = $66
Commission on VCR: P = .12 (400) = $48
Total commission = 66 +48 = $114
A math class has studied the first 330 pages of their textbook. If this is 75% of the entire book, how many pages are in the entire book?
440 pages
330 = .75 (w)
= 440 pages total
The school dance committee needs 160 balloons inflated for the dance. Zoey inflated 15% of the total number of balloons. How many balloons did Zoey inflate?
24 balloons
P = .15 (160)
= 24
The plantery received a shipment of 40 plants on Wednesday. BY Friday, 82.5% of the plants had been sold. How many were sold?
33 plants
P = .825 (40)
= 33 plants
A baseball park has 40,000 seats, of which 13,040 are box seats and 18,200 are reserved seats. What percent of the seats are box seats?
32.6%
13,040 = % (40,000)
= 32.6%
A salesman receives an 8% commission on guitar sales. If he earns $11.38 in commission, what was the total amount of his sales?
$142.25
11.38 = .08 (w)
= $142.25
The Jets won 40 games out of 64, while the Giants won 32 games out of 50. Which team had the higher percent of wins?
Giants at 64%
Jet win %: 40 = % (64)
= 62.5%
Giant win %: 32 = % (50)
= 64%
Catherine answered 95% of the test questions correctly. If she answered 38 questions correctly, how many questions were on the test?
40 questions
38 = .95 (w)
= 40