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anonymous
 one year ago
I have a pretty simple math problem: the price of a liter cola increased from $1.09 to $1.29. What was the percent of increase? I know to first subtract (1.291.09) that equals $.20. Next divide .20 by 1.09 (first move decimal points over) I got the same ander as the book, except it says the final answer is 18.3% increase. Where did the decimal come from? It's supposed to be in front of the 1. I think they're rounding, but how did the get that? And how are you supposed to round a non terminating, non repeating decimal(in finance)?
anonymous
 one year ago
I have a pretty simple math problem: the price of a liter cola increased from $1.09 to $1.29. What was the percent of increase? I know to first subtract (1.291.09) that equals $.20. Next divide .20 by 1.09 (first move decimal points over) I got the same ander as the book, except it says the final answer is 18.3% increase. Where did the decimal come from? It's supposed to be in front of the 1. I think they're rounding, but how did the get that? And how are you supposed to round a non terminating, non repeating decimal(in finance)?

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kropot72
 one year ago
Best ResponseYou've already chosen the best response.0The percentage increase is given by \[\large \frac{0.20}{1.09}\times\frac{100}{1}=18.3\ percent\] The answer is rounded to the nearest onetenth of a percent.

kropot72
 one year ago
Best ResponseYou've already chosen the best response.0@Learea Do you find this helps your understanding?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thanks! Is that how numbers (with percents or money) is usually rounded? To the nearest one tenth?

kropot72
 one year ago
Best ResponseYou've already chosen the best response.0Well, the answer in the book has been rounded to the nearest onetenth of a percent. However interest rates on investments are often stated to onehundredth of a percent. Sometimes questions state what rounding should be given to an answer.
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