Divide the total amount of juice by the number of children.

• \( \frac{17}{20} \div 6 = \frac{17}{20} \times \frac{1}{6} = \frac{17}{120} \)
• \( \frac{17}{120} \) litres cannot be simplified further.
• Note: \( \frac{17}{120} \approx 0.1417 \) L, while Option D \( \frac{3}{20} = 0.15 \) L.
• The stored key selects Option D (\( \frac{3}{20} \)), but the correct computation from the given numbers is \( \frac{17}{120} \), which is not among the options. The question text may contain a typo (e.g. 9/10 L would give 3/20).

Computed Answer: \( \frac{17}{120} \) litres per child
Note: No option matches the computed value.