If a pair of shoes is now worth $180 because they were reduced by 20%

The original price is $225 ? (Smirk)

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- Feb 19th 2010, 03:05 PMrodgersPlease confirm these for me part 2
If a pair of shoes is now worth $180 because they were reduced by 20%

The original price is $225 ? (Smirk) - Feb 19th 2010, 03:09 PMTKHunny
You do not quite have the spirit of the task.

You must prove it, not guess at it.

How do you arrive at 225?

Wy do you doubt? - Feb 19th 2010, 03:11 PMSuperCalculus
As $180 is 80% of the original price, it's represented by this;

$\displaystyle 0.8x = 180$

Hence,

$\displaystyle \frac{180}{0.8} = x = 225$

All in dollars, of course. - Feb 19th 2010, 03:17 PMTKHunny
I guess we'll just never know if the student has a clue. Alas...

- Feb 19th 2010, 03:18 PMSuperCalculus
- Feb 19th 2010, 04:29 PMrodgers
I have workings but they are hand written

I was just checking if the answer was right or not, then I could post the workings if I had to (Happy) - Feb 19th 2010, 05:05 PMDiagonal
- Feb 19th 2010, 05:08 PMrodgers
But I already had workings I was just checking my answer (Worried)

(and i am not a him) - Feb 19th 2010, 05:08 PMSuperCalculus
I didn't do it for him, since he'd already got the correct answer, I just explained my reasoning. If he'd got it wrong, I wouldn't have done so much. And at any rate, it's unfair to assume all people learn that way. For instance, I would learn it better simply by looking at what I posted, observing the method applied, and applying it to all future calculations of the same type. Thus, I learn. *Shrugs* To each their own I guess.

- Feb 20th 2010, 09:50 PMmr fantastic