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GED Math Videos 69 videos

GED Math 5.4 Rational Numbers
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GED Math 5.4 Rational Numbers. How many gallons of custom color can Marcus create without buying any more paint?

GED Math 2.4 Rational Numbers
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GED Math 2.4 Rational Numbers. Lucius's favorite restaurant is how many km from his home?

GED Math 1.3 Rational Numbers
382 Views

GED Math 1.3 Rational Numbers. Which answer best fills in the blank?

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If a shirt is on sale for $12 then how much did it cost before the sale? 352 Views


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Description:

Math Expression and Equations. If a shirt is on sale for $12 then how much did it cost before the sale?

Language:
English Language

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,

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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