Find the price of the new offer

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The discussion clarifies the difference between calculating 20% of a price and determining a price that is 20% off. The original poster mistakenly computed 20% of the original price instead of applying the discount. To find the new price after a 20% discount, one must calculate 20% of the original price and subtract that amount from the original price. The conversation emphasizes the importance of understanding the terms "of" and "off" in this context, as they significantly change the calculation. The thread concludes with a note to wait for the original poster's return for further clarification.
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Homework Statement
Find 20% of original price
Relevant Equations
What is new price?
Attempting: 20% is 2/10 as a fraction.
550: by 10 and *2 =110
Is it correct if not explain to me please
Thanks
 

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The new price is NOT 20% of the original one. It's 20% OFF. Try it again.
 
550/100*20=110
 
You are computing 20% of 550, but this is not what the problem asks you.
 
Can you show me the proper way,please
 
Think about this: If something is 100% off, how much do you have to pay?
 
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Rubies said:
Problem Statement: Find 20% of original price
The above is NOT the problem statement in the image you attached. It says that the TV's price is 20% off the original price, not 20% of the original price.
Rubies said:
Relevant Equations: What is new price?
 
Think of the problem as you would when shopping for something. Ie going to the department store to buy a shirt. If the shirt cost 50 dollars and it says that the sales price is 50% off (we do not care about tax in this situation). What is the actual amount you pay? It is certainly not 50, since it is on sale...
 
If they said they took $10 off the price, do you know what to do? This is similar, except first you calculate the amount off using the percentage.
 
  • #10
If English is not your native language, it is common to confuse "of" and "off" (other languages often use the same word for both). "Off" in this context means "taken away from", thus 20% off the original price means that 20% of the original price is taken away from the original price, so the new price is 80% of the original price.
 
  • #11
Let's hold off any further comments until the OP returns. S/he hasn't been here for nearly a month.
 
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