ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


CAHSEE Videos 392 videos

CAHSEE 1.2 Passage Drill
246 Views

CAHSEE 1.2 Passage Drill. Which of these sentences from the story best illustrates the sensitive side of the narrator's nature?

CAHSEE 1.3 Passage Drill
337 Views

CAHSEE 1.3 Passage Drill. Which of the following is the best way to express the meaning of the word alumni in this sentence?

CAHSEE 1.4 Passage Drill
210 Views

CAHSEE 1.4 Passage Drill. What does the use of flashbacks accomplish in "Graduation"?

See All

CAHSEE Math 2.5 Statistics, Data, and Probability I 183 Views


Share It!


Description:

Statistics, Data, and Probability I: Drill Set 2, Problem 5. If there are 800 homes in the town, how many of them are apartments or condominiums?

Language:
English Language

Transcript

00:03

Here's a boring, unshmoopy question you'll find on the exam...

00:08

The chart below shows the percentages of the different types of homes in Shmoopville.

00:12

If there are 800 homes in the town, how many of them are apartments or condominiums?

00:17

And here are the potential answers:

00:24

So... this question is a "How To Read A Pie Chart" test --with a twist.

00:28

It takes the percentages we see on the chart...

00:30

...and makes us multiply them against a constant or base.

00:33

In this case, the question GIVES us that 100% of the pie is 800.

00:39

That is, we'd get 800 if we added up all the homes in Shmoopville --

00:44

So if 800 homes is 100% of the pie, then,

00:48

say... 50% is 400 homes and 25% is 200 homes.

00:52

So when they ask us for "apartments or condominiums" we are just looking for a summation

00:59

of the number of apartments PLUS the number of condominiums.

01:03

The OR there is big fat signal to ADD our elements.

01:07

So in this case, we don't care how many apartments there are or how many condos there are --

01:11

we just care about the TOTAL of both of them.

01:14

So to simplify the problem, we can just add the percentages, which is 20% and 25% to total 45%.

01:21

And we take that 45% and multiply it by 800 to get the NUMBER of homes.

01:26

So here we go: 800 times 45 is zero zero 40, then slip one

01:33

to the left and we get zero zero 2 and 3... and the total is 360.

01:38

Or answer B. And all the Shmoops down in Shmoopville rejoiced.

Related Videos

CAHSEE Math 5.3 Algebra and Functions
2033 Views

CAHSEE Math: Algebra and Functions Drill 5, Problem 3. Solve the equation.

SAT Math 6.1 Geometry and Measurement
3974 Views

SAT Math 6.1 Geometry and Measurement

CAHSEE Math 3.4 Statistics, Data, and Probability I
363 Views

Statistics, Data, and Probability I: Drill Set 3, Problem 4. How many different avatars can be created based on the given options?

CAHSEE Math 3.2 Statistics, Data, and Probability II
224 Views

Statistics, Data, and Probability II Drill 3 Problem 2. Which two sports together make up for the preferences of more than half of all those w...

CAHSEE Math 3.3 Statistics, Data, and Probability II
198 Views

Statistics, Data, and Probability II Drill 3 Problem 3. One hundred twenty of those who were asked preferred what sport?