To find the difference in height between the two heights of the parasail, we start with the given heights:
- First height: \( \frac{1}{20} \) kilometers
- Second height: \( \frac{1}{50} \) kilometers
To find the difference, we subtract the second height from the first height:
\[ \frac{1}{20} - \frac{1}{50} \]
To perform this subtraction, we need a common denominator. The least common multiple of 20 and 50 is 100. We convert each fraction:
\[ \frac{1}{20} = \frac{5}{100} \quad \text{(because } 1 \times 5 = 5 \text{ and } 20 \times 5 = 100\text{)} \] \[ \frac{1}{50} = \frac{2}{100} \quad \text{(because } 1 \times 2 = 2 \text{ and } 50 \times 2 = 100\text{)} \]
Now we can subtract:
\[ \frac{5}{100} - \frac{2}{100} = \frac{5 - 2}{100} = \frac{3}{100} \]
Thus, the difference in height is \( \frac{3}{100} \) kilometers.
Looking at your options, the correct response is:
Start Fraction 3 over 100 End Fraction kilometers.