Find the ratio of $45 m i n u t e s$ to $1 h o u r$ and express it in its lowest form.

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Solution

Step-1: Find the ratio:
Since, the given quantities are in different units, first we convert hours into minutes.
$1$ $h o u r$ = $60 m i n u t e s$
So, the required ratio is $45 : 60$ .
Step-2: Express the ratio in the lowest form:
$= 45 : 60 = \frac{45}{60} = \frac{3}{4}$
Therefore, $3 : 4$ is the lowest form.

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