Question

Express each of the following ratios in its simplest forms:
$\left(v\right)$ $1\text{hour}:45min$

Answer 1

Express in the simplest form

We know that $1\text{hour}=60min$
we have:
$1\text{hour}:45min=\frac{1\text{hour}}{45min}$

$=\frac{60min}{45min}=\frac{60}{45}$

Above ratio or fraction can be converted to its simplest form by dividing numerator and denominator by $15$, we get

$\frac{60}{45}=\frac{60÷15}{45÷15}=\frac{4}{3}=4:3$

Hence, the simplest form of the ratio
$1\text{hour}:45min$ is $4:3$.