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Sally is buying new school supplies. She used a 15% off coupon on a set of markers that was originally $3.00. She also bought some paper that was 20% off. In total, Sally spent $5.35 after using her coupons. How much was the original price of the paper?

 Jan 30, 2019
 #1
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$3 x 0.85 = $2.55 - cost of markers.

Let the original price of paper =P

$2.55 + 0.80P = $5.35

0.80P = $5.35 - $2.55

0.80P =$2.80

P = $2.80 / 0.80

P = $3.50 - Original price of paper.

 Jan 30, 2019
 #2
avatar+111357 
+1

Sally is buying new school supplies. She used a 15% off coupon on a set of markers that was originally $3.00. She also bought some paper that was 20% off. In total, Sally spent $5.35 after using her coupons. How much was the original price of the paper?

 

 

Price she paid for the markers with coupon =   3.00 x .85  = $2.55

 

Price of paper = P

Price of paper with coupon = .80P

 

So

 

2.55 + .80P =  5.35      subtract 2.55 from both sides

 

.80P = 2.80      divide both sides by .80

 

P =  2.80 / .80  = $3.50  = original price of the paper

 

 

cool cool cool

 Jan 30, 2019

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