Question

Find the ratio of each of the following in simplest form:

$2.1m$ to $1.2m$

Answer 1

Given ratio is $2.1m$ to $1.2m$

which can also be written as $2.1m:1.2m$

Also, $2.1m:1.2m=\frac{2.1m}{1.2m}=\frac{21}{12}$

Now simplest form of $\frac{21}{12}$ can be obtained by dividing both term by their HCF $3$

$\frac{21}{12}=\frac{{\displaystyle \frac{21}{3}}}{{\displaystyle \frac{12}{3}}}=\frac{7}{4}$

Hence, simplest form of $2.1m$ to $1.2m$ is $7:4$