anonymous
  • anonymous
A cashier offers Nathan an opportunity to save forty percent on his purchase. The original cost is fifty-six dollars. Estimate what his savings would be, then calculate the actual savings.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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andriod09
  • andriod09
Hey pokemonstarters12318! Welcome to Openstudy! Let me give you a tip: have you ever heard of the percent bar method?
anonymous
  • anonymous
I've herd a little
andriod09
  • andriod09
Here, lay out what you know for me, and i'll walk you through the percent bar method, okay?

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More answers

anonymous
  • anonymous
ok
andriod09
  • andriod09
Just fill this out: In percent form, how much did the cashier offer Nathan to save? What was the total cost of the sale?
anonymous
  • anonymous
40% 56
andriod09
  • andriod09
Very nice. So then, the percent bar method is like this: |dw:1377702992682:dw|
andriod09
  • andriod09
So then, using that, - tell me - how would you put it into an equation, using the butterfly method, right?
anonymous
  • anonymous
ya
andriod09
  • andriod09
So then - show me - how it would look, if you wouldn't mind please. Thanks.
andriod09
  • andriod09
Pokemon, you still there?
anonymous
  • anonymous
ya just thinking
andriod09
  • andriod09
would you like some help on how to set it up? All you do is take the number, and make them into fractions. like the "x" on top of the "56", and the 40" on top of the "100".
anonymous
  • anonymous
2240/100
anonymous
  • anonymous
24.4
andriod09
  • andriod09
Oh my... you are right, and you did it a different way. :P What I usually do is this: 1) Make the percent bar - like I did earlier - 2) Set up the equation: \[\frac {x}{56} = \frac {40}{100}\] 3) Simplify the equation \[\frac {x} {56} = \frac {4} {10}\] 4) Cross multiply them, to get: \[224 = 10x\] 5) simplify - in this case, dividing - again to get x alone: \[\frac {224} {10x} = \frac {10x} {10x}\] 6) Which leaves us with the final x, which is alone: \[22.4 = x\] So then, if he took the deal, he would save approximately 22 dollars, and would pay a total of how much?

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