Question

Express each of the following ratios in its simplest forms:
$\left(ii\right)$ $30cm:2m$

Answer 1

Express in the simplest form

We know that $1m=100cm$
$\Rightarrow 2m=2\times 100=200cm$
We have:
$\Rightarrow 30cm:2m=\frac{30cm}{2m}=\frac{30cm}{200cm}=\frac{3}{20}$

Hence, the simplest form of the ratio
$30cm:2m$ is $3:20$.