Question

A computer that cost 1099 last year costs 999 this year.​What is the percent of change in price rounded to the nearest tenth?

Answer 1

To calculate the percent change in price, you can use the following formula:

\[
\text{Percent Change} = \frac{\text{New Price} - \text{Old Price}}{\text{Old Price}} \times 100
\]

In this case, the old price (last year's price) is 1099 and the new price (this year's price) is 999.

1. Calculate the change in price:
\[
\text{Change in Price} = 999 - 1099 = -100
\]

2. Plug the values into the percent change formula:
\[
\text{Percent Change} = \frac{-100}{1099} \times 100
\]

3. Calculate the fraction:
\[
\frac{-100}{1099} \approx -0.0909
\]

4. Multiply by 100 to get the percentage:
\[
-0.0909 \times 100 \approx -9.09
\]

Rounding to the nearest tenth, the percent change in price is approximately:

\[
\boxed{-9.1\%}
\]

This indicates a decrease of 9.1%.