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Alex787 [66]
3 years ago
7

To covert 180 seconds to minutes, which proportion should you use?

Mathematics
2 answers:
myrzilka [38]3 years ago
3 0
It would look like this: 60/1 min = x/180 sec
Arte-miy333 [17]3 years ago
3 0
You can look at it this way,

there are 60 seconds in 1 minute, how many minutes in 180 seconds?

\bf \begin{array}{ccll}
seconds&minutes\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
60&1\\
180&x
\end{array}\implies \cfrac{60}{180}=\cfrac{1}{x}\implies x=\cfrac{180\cdot 1}{60}

but usually, the proportion wil be a fraction, so usually you'd put the unit you need cancelled at the bottom or the denominator.

60s/m  or m/60s , in this case we need to cancel the seconds, so 180 s * m/60s.
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