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- anonymous

after a 30% reduction, you purchase a new soda on sale for 315. what was the original price of the sofa?

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- anonymous

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- anonymous

315*(1-.3)=original price
=220.5

- anonymous

x - 30/100 = 315
x = 315 + 30/100
x = ?

- anonymous

oops I think I did that wrong

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- anonymous

x*(1-.3)=315
x=450

- anonymous

how did u get 450 cause i got 409.5

- anonymous

blender is right

- anonymous

x=315/.7
7 into 31 4 times 7*4=28
remainder: 3, drop the 5
7 into 35, 5 times

- anonymous

i am confused

- anonymous

About which part, setting up the equation, reducing the equation, or dividing 315 by .7?

- anonymous

pretty much all of it

- anonymous

Ok we can go through it slowly.
First, we now that the product x was reduced by 30%. This means that originally we had some x and muliplied it by .3 to get the discount. Instead of doing this separately, we take 70% of the original x to find the discounted price. So that is .7x, which we know to be equal to 315. Then just divide .7 on each side (remember % is just a fancy way of saying that number per (divided by) cent (100).

- anonymous

Does that make more sense?

- anonymous

yeah now it does

- anonymous

Cool, goodluck with your math final, I gotta go study myself. you can message me on aim (ooblender) if you have any urgent questions.

- anonymous

i have yahoo sorry

- anonymous

zblender89@yahoo

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