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GED Math 2.2 Expression and Equations 340 Views
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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.
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