Two-Way Frequency Tables & Percents

If you are asked to find the percent of people who did not attend the school play that did not attend the basketball game, what should the total be?

• 221

• 78

• 118

• 103

• 143

Answer explanation

Since we were asked about the percent of people who DID NOT ATTEND THE SCHOOL PLAY, that means the total is the number of people who didn't attend the school play, which is 78.

If you are asked to find the percent of people that did not attend the school play who did not attend the basketball game, what should the fraction be?

• 15/221

• 15/103

• 15/78

• 63/78

Answer explanation

From the last question, we know that the total is 78 people. Out of those 78 people (who didn't attend the play), 15 of them did not attend the basketball game. So, our fraction is 15/78.

Tags

CCSS.6.RP.A.3C

What is the percent of people who did not attend the school play who did not attend the basketball game?

• 23.1%

• 6.79%

• 14.6%

• 28.5%

Answer explanation

From the last question, we know that the fraction is 15/78.

15/78 = 0.231

0.231 * 100 = 23.1%

If you want to find the percent of eighth graders who prefer cake, what fraction should you start with?

• 198/431

• 116/431

• 116/220

• 116/198

Answer explanation

We are looking at the percent of EIGHTH GRADERS who prefer cake. That means our total is the number of eighth graders (220). Then, we just want the eighth graders who prefer cake. There are 116 of them, so our fraction is 116/220.

If you want to find the percent of students who are in seventh grade, what fraction should you use?

• 82/431

• 82/211

• 129/431

• 211/431

Answer explanation

We are looking at the percent of STUDENTS who are seventh graders. That means the number of students (431) needs to be the total. Then, we are looking at seventh graders. We don't care if they prefer cake or ice cream. So, we'll use the total number of seventh graders (211). Our fraction is 211/431.

If you were asked to find which percent of people who got water ordered no food, what fraction should you use?

• 140/400

• 20/140

• 20/400

• 60/140

Answer explanation

We are looking at the percent of PEOPLE WHO GOT WATER, which makes the total 140. Then, of those people who got water, we want people who ordered no food. The number in the box "water, no food" is 20, so the fraction is 20/140.

If you were asked to find the percent of people who ordered a hot dog and a soda, which fraction should you use?

• 50/400

• 50/200

• 50/158

• 358/400

Answer explanation

We are looking for the percent of PEOPLE, so that means we need to use the total number of people (400) as the total. Then, we want people who ordered a hot dog and a soda. There are 50 people who ordered a hot dog and a soda, which makes the fraction 50/400.

Tags

CCSS.6.RP.A.3C

If you are asked to find the percent of people who skip breakfast who are ages 14-17, what is the total that you should use?

• 43

• 90

• 47

• 54

• 36

Answer explanation

We are asked to find the percent of PEOPLE WHO SKIP BREAKFAST, so that's our total: 43 people skip breakfast.

If you are asked to find the percent of all people who are ages 10-13. what should the total be?

• 43

• 90

• 47

• 54

• 36

Answer explanation

We are asked to find the percent of ALL PEOPLE who are ages 14-17, the total will be the total number of people: 90.

If you are asked to find the percent of chemical engineers that enjoy math best, what should the total be?

• 175

• 171

• 170

• 254

• 516

Answer explanation

Since we are asked to find the percent of CHEMICAL ENGINEERS that enjoy math best, the total needs to be the number of chemical engineers: 171.