Question

Find the ratio of the following:
$500$mL to $2$ litres.

Answer 1

$500$mL to $2$L
$1$L $=1000$mL
Required ratio$=\frac{500}{2000}=\frac{5}{20}=\frac{5}{5\times 4}=\frac{1}{4}=1:4$.