which expression can be used to convert 22 australian dollars to us dollars? assume 1.2 australian dollars…

which expression can be used to convert 22 australian dollars to us dollars? assume 1.2 australian dollars equals 1 us dollar.\n$22 aud\times\frac{1.2 usd}{1 aud}$\n$22 aud\times\frac{1 usd}{1.2 aud}$\n$1.20 aud\times\frac{1 usd}{1.2 aud}$\n$1.20 aud\times\frac{1.2 usd}{1 aud}$
Answer
Explanation:
Step1: Identify conversion rate
We know 1.2 AUD = 1 USD, so 1 USD = $\frac{1}{1.2}$ AUD. To convert from AUD to USD, we multiply the amount in AUD by the conversion - factor of $\frac{1\ USD}{1.2\ AUD}$.
Step2: Apply conversion to 22 AUD
To convert 22 AUD to USD, we use the expression $22\ AUD\times\frac{1\ USD}{1.2\ AUD}$.
Answer:
$22\ AUD\times\frac{1\ USD}{1.2\ AUD}$ (the second option)