Let p be the percent decrease in the price of a DVD recorder that is marked down from $500 to $400. Which proportion can be used
to compute p?
A. $500-$400/$400=p/100
B. $500-$400/$500=p/100
C. $400-$500/$500=p/100
D. $400-$500/$400=p/100
1 answer:
The correct answer is C. $400-$500/$500=p/100.
The formula for percent change is as follows.
New - Old/ Old = Percent change.
With 500 being the old score, we would look for it to be subtracted and on the bottom. C is the only option that has that.
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