SOLUTION: 2p2 -15p + 25 = A man bought a shirt at a sale. He saves $30 on the normal price when he paid $120 for the shirt. What was the percentage discount on the shirt?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: 2p2 -15p + 25 = A man bought a shirt at a sale. He saves $30 on the normal price when he paid $120 for the shirt. What was the percentage discount on the shirt?      Log On


   

Question 734381: 2p2 -15p + 25 =
A man bought a shirt at a sale. He saves $30 on the normal price when he paid $120 for the shirt. What was the percentage discount on the shirt?
Found 2 solutions by stanbon, rothauserc:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
2p2 -15p + 25
= 2p^2-10p-5p + 25
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= 2p(p-5)-5(p-5)
= (p-5)(2p-5)
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A man bought a shirt at a sale. He saves $30 on the normal price when he paid $120 for the shirt. What was the percentage discount on the shirt?
original price 120+30 = 150
Quantity discount: 30
Percent discount: 30/150 = 1/5 = 20%
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Cheers,
Stan H.
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Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
The man paid $120 for the shirt, so the original cost was $120 + $30 = $150
The percentage discount on the shirt is
$30/$150 = 1/5 = 20%