Question

Find the percent of increase from 8 feet to 10 feet. Round the percent to the nearest tenth if necessary.

Answer 1

To find the percent increase from 8 feet to 10 feet, you can use the formula for percent increase:

\[
\text{Percent Increase} = \left( \frac{\text{New Value} - \text{Old Value}}{\text{Old Value}} \right) \times 100
\]

In this case, the old value is 8 feet and the new value is 10 feet. Plugging these numbers into the formula gives:

\[
\text{Percent Increase} = \left( \frac{10 - 8}{8} \right) \times 100
\]

Calculating the numerator:

\[
10 - 8 = 2
\]

Now, divide by the old value (8):

\[
\frac{2}{8} = 0.25
\]

Finally, multiply by 100 to convert to a percentage:

\[
0.25 \times 100 = 25
\]

Therefore, the percent increase from 8 feet to 10 feet is \( \boxed{25} \) percent.

Answer 2

Find the percent of decrease from 136 days to 85 days. Round the percent to the nearest tenth if necessary.