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percent

by maria » Sun May 11, 2008 1:20 pm
if the price of a candy bar is doubled, by what percent will sales of the candy bar decrease?
1. for every ten cent increase in price, the sales will decrease by 5 percent.
2. each candy bar now costs 60 cents.

Please help me.

Maria
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Source: — Data Sufficiency |
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by netigen » Sun May 11, 2008 4:01 pm
A is sufficient since the total price increase is 100% and you know that for every 10% increase in price the sale decreases by 5%. No need to calculate the final decrease though
B is not sufficient since the price of candy does not tell us the decrease in sale
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