Volume of cubical container = 30 cm × 30 cm × 30 cm = 27,000 cm&sup3;.<br>
Volume of water poured out = 15 cm × 10 cm × 10 cm = 1,500 cm&sup3;.<br>
Water left = 27,000 − 1,500 = 25,500 cm&sup3;.<br><br>
&bull; Fraction left = \( \frac{25500}{27000} \)<br>
&bull; Simplify: divide numerator and denominator by 1,500.<br>
&bull; \( \frac{25500}{27000} = \frac{17}{18} \)<br><br>
Final Answer: \( \frac{17}{18} \)