To find the change in height of the parasail, you subtract the final height from the initial height.
Initial height = \( \frac{1}{20} \) meters
Final height = \( \frac{1}{50} \) meters
First, we need to find a common denominator to perform the subtraction. The common denominator for 20 and 50 is 100.
Convert the fractions:
- \( \frac{1}{20} = \frac{5}{100} \)
- \( \frac{1}{50} = \frac{2}{100} \)
Now, subtract the final height from the initial height: \[ \text{Change in height} = \frac{5}{100} - \frac{2}{100} = \frac{3}{100} \text{ meters} \]
Thus, the change in height is \( \frac{3}{100} \) meters, or 0.03 meters.