a stereo was marked down by 30% and sold for $84. what was the pre-sale price of the stereo?
.3x=84
280
why is this wrong?
percent
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Tani
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If you are unsure of a percent problem, try working backward from your answer.
If the stereo started at $280 and was marked down by 30%, that would be a reduction of $84 leaving a price of $196, not $84.
I suspect you misread the problem. The stereo was marked down BY 30%, not TO 30%.
If the stereo started at $280 and was marked down by 30%, that would be a reduction of $84 leaving a price of $196, not $84.
I suspect you misread the problem. The stereo was marked down BY 30%, not TO 30%.
Tani Wolff
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Gurpinder
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So Tani,Tani Wolff - Kaplan wrote:If you are unsure of a percent problem, try working backward from your answer.
If the stereo started at $280 and was marked down by 30%, that would be a reduction of $84 leaving a price of $196, not $84.
I suspect you misread the problem. The stereo was marked down BY 30%, not TO 30%.
$84 is the price after the 30% reduction right??
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Gurpinder
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Tani Wolff - Kaplan wrote:Correct
AHHHH I see what I was doing wrong. I took $84 to be 30% whereas 84$ is the 70% of the original price
so the equation would be .7x=84 > x=120
thank you for your help!
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Letting n = the presale price of the stereo, we can create the following equation:
0.7n = 84
n = 120
Answer: D
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