ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
GED Videos 131 videos
GED Math 2.4 Rational Numbers. Lucius's favorite restaurant is how many km from his home?
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 3, Problem 5. Which part of the equation should be changed?
If a shirt is on sale for $12 then how much did it cost before the sale? 399 Views
Share It!
Description:
Math 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: 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 1.1 Graphs and Functions. Which is the appropriate region of the coordinate plane?
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?