Question

5.
Find the percent of change in altitude if a weather balloon moves from 50 ft to 95 ft. Describe the percent of change as an increase or decrease. Round to the nearest tenth if necessary.

Answer 1

To find the percent of change in altitude when a weather balloon moves from 50 ft to 95 ft, you can use the formula for percent change:

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

In this case:

- Old Value = 50 ft
- New Value = 95 ft

Now substitute the values into the formula:

\[
\text{Percent Change} = \frac{95 - 50}{50} \times 100
\]

Calculate the difference:

\[
95 - 50 = 45
\]

Now plug this into the formula:

\[
\text{Percent Change} = \frac{45}{50} \times 100
\]

Next, divide 45 by 50:

\[
\frac{45}{50} = 0.9
\]

Now multiply by 100:

\[
0.9 \times 100 = 90
\]

Therefore, the percent of change in altitude is **90%**, and since the altitude increased from 50 ft to 95 ft, this is described as an **increase**.

So, the final answer is:

**90% increase**.