Subtract the amount drank from the total amount. Convert the whole number to an improper fraction with the same denominator.<br><br>
&bull; 2 = \(\frac{10}{5}\) and \(1\frac{1}{5} = \frac{6}{5}\)<br>
&bull; \(\frac{10}{5} - \frac{6}{5} = \frac{4}{5}\)<br><br>
Mike had \(\frac{4}{5}\) litres of water left.<br>
Check: \(\frac{4}{5} + 1\frac{1}{5} = \frac{4}{5} + \frac{6}{5} = \frac{10}{5} = 2\). ✓