Question

what percentage of 45 litre is 18 litre?​

Answer 1

$∴ Let \: the \: percentage \: of \: 18 \: litre \: be \: x,</p><p> \\ \\ ∴\frac{18}{45} = \frac{x}{100 } \\ \\ = (18 \times 100) = (45 \times x) \\ \\ = 1800 = 45x \\ \\ = x = \frac{1800}{45} \\ \\ = x = 45 \\ \\ ∴ The \: percentage \:of \:18 \:litre \: is \: 45\%.\\ \:While \:of \:45 \:litre\: is\: 100-45=55\%.</p><p>$