ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Word Problems Videos 32 videos
CAHSEE Math Algebra and Functions: Drill Set 1, Problem 1. At this rate, what is the total cost of 10 songs?
CAHSEE Math: Algebra I Drill 6, Problem 3. If x ounces of a 10% salt solution are added with 20 ounces of a 50% salt solution to create a comb...
GED Math 2.2 Expression and Equations 340 Views
Share It!
Description:
GED Math 2.2 Expression and Equations. If a shirt is on sale for $12 then how much did it cost before the sale?
Transcript
- 00:03
Here's your Shmoop dujour, brought to you by Gigantomart.
- 00:08
It seriously has everything, including a Walmart and a Target.
- 00:32
We could call our Aunt Flo, and she'd able to answer this for us in about two seconds...
- 00:37
because that woman knows her way around a sale.
- 00:40
But we'd rather not get roped into another hour-long discussion about her gout,
Full Transcript
- 00:44
so let's try and go it alone.
- 00:46
Here's this shirt. It used to cost $X. That's what we're trying to find.
- 00:51
It went on sale for 35% off the regular price.
- 00:54
It now costs only $12.
- 01:07
We know we can write percents as decimals, something that would be really helpful in this instance.
- 01:11
So we can also express this equation as X - 0.35X = 12.
- 01:27
Our handy dandy calculator tells us that
- 01:31
12 over 0.65 equals 18.46,
- 01:34
which is our answer choice C.
- 01:37
As in, come help me with my gout.
Related Videos
GED Math 1.1 Graphs and Functions. Which is the appropriate region of the coordinate plane?
GED Math: Graphs and Functions Drill 5, Problem 5. What is the value of a?
GED Math: Measurement Drill 1, Problem 1. The area, in square inches, of the shaded region where the two rectangles overlap is...what?
GED Math: Expression and Equations Drill 1, Problem 1. How much do the apples cost after tax?
ACT Math: Pre-Algebra Drill 2, Problem 3. Which of the following numbers is smallest?