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an item in a 15% off sale has been reduced by 12 dollars.how much did the item cost before the sale

2007-03-23 23:00:34 · 8 answers · asked by Anonymous in Science & Mathematics Mathematics

8 answers

let C = the cost of the item originally

the question tells you that

15% of C = 12 dollars

or (15/100)C = 12

C = 80

so the original cost of the item is $80

2007-03-23 23:05:15 · answer #1 · answered by kittycat 3 · 0 0

If 15% of the original price is 12
then 1% of the original price is 12/15= 0.8
If 0.8 is 1% then 100% is 0.8x 100= 80
Then the original price of the item is 80 dollars
I hope this helps

2007-03-24 06:17:09 · answer #2 · answered by Nourhan 5 · 0 0

Find the base when the amount and percent are knows.

amount / percent = base

convert 15% to decimal

remove the % sign. divide 15 by 100

15 / 100 = 0.15

divide 12 by the decimal

12 / 0.15 = 80

$ 12 is 15 % of $ 80

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2007-03-24 06:30:29 · answer #3 · answered by SAMUEL D 7 · 0 0

If 12 dollars represents 15% of the original price, then, to get the original price, divide 12 by 0.15 (because % means per 100) and you get the answer 80 dollars.

2007-03-24 06:06:42 · answer #4 · answered by JJ 7 · 0 0

item y when it is regular after 15% will be y-15/100y
so y -(y-15/100y)=12
y-y+15/100y=12
15/100y=12
y =12/(15/100)=12*100/15
y=12*20/3=4*20=80
it was 80 dollars

2007-03-24 06:09:40 · answer #5 · answered by live4hoping 2 · 0 0

The isn't enough info. Like how much is it now? did the item get reduced TO 12 dollars?

2007-03-24 06:06:12 · answer #6 · answered by Anonymous · 0 1

15% of the items cost is $12

that should help you determine the price
I'm not going to tell you the answer because
1) you said so i can just help you find the answer
and 2) to stimulate your brain!

but the d0uch3 above me already gave you the answer.

2007-03-24 06:05:44 · answer #7 · answered by Anonymous · 0 1

$80
Please give me best answer thanks!

2007-03-24 09:13:44 · answer #8 · answered by Anonymous · 0 1

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