Question

The ratio of $15\mathrm{minutes}:15\mathrm{seconds}$ in simplest form is

• A. $1:1$
• B. $60:1$
• C. $1:60$
• D. $1:4$

Answer 1

The correct option is B

$60:1$

The ratio of $15\mathrm{minutes}:15\mathrm{seconds}$ can be written in the fraction form like $\frac{15\mathrm{minutes}}{15\mathrm{seconds}}$
To make the ratio of any quantity their units must be the same
$1\mathrm{minute}=60\mathrm{seconds}$
$\frac{15\times 1\mathrm{minute}}{15\mathrm{seconds}}=\frac{15\times 60\sec .}{15\sec .}=\frac{60}{1}$
In $60$ and $1$, there is no common factor other than $1$
So the simplest ratio is $60:1$.