Find the ratio of 1 1-2minutes to 45 seconds

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Standard VI

Mathematics

Uses of Ratios and Proportions

Find the rati...

Question

Find the ratio of $1 \frac{1}{2} minutes$ to $45 seconds$

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Solution

Given:
$1 \frac{1}{2} minutes$ to $45 seconds$
Two quantities are not in the same units. So, we have to convert them into the same units.
$1 \frac{1}{2} minutes = 90 seconds$
$90 seconds$ to $45 seconds$ $=$ $\frac{90 seconds}{45 seconds} [Note : HCF (90, 45) = 45]$
$= \frac{2}{1} = 2 ˸ 1$
Hence, the ratio of $1 \frac{1}{2} minutes$ to $45 seconds$ is $2 ˸ 1$

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Find the ratio of 112minutes to 45seconds

Given: 112minutes to 45secondsTwo quantities are not in the same units. So, we have to convert them into the same units.112minutes=90seconds90seconds to 45seconds=90seconds45secondsNote:HCF(90,45)=45 =21=2˸1Hence, the ratio of 112minutes to 45seconds is 2˸1

Find the ratio of $1 \frac{1}{2} minutes$ to $45 seconds$