Tick the correct alternative :
The ratio of $30$ minutes to $1$ hour in simplest form is

$30 : 1$

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$60 : 30$

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$1 : 2$

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$\frac{1}{2} : 1$

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Solution

The correct option is C
$1 : 2$

To find the ratio, both quantities should have the same unit .
We know that , $1$ hour = 60 minutes
Required ratio = $\frac{30 m i n u t e s}{60 m i n u t e s}$
= $\frac{1}{2} (D i v i d i n g N u m e r a t o r a n d D e n o m i n a t o r b y 30)$
= $1 : 2$
So, the answer is option C

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