Question

Which expression can be used to convert 22 Australian dollars to US dollars?

Answer 1

Answer:

$\frac{22\text{ AUD }\cdot 1\text{ USD}}{1.20\text {AUD}}$

Step-by-step explanation:

We are told that 1.2 Australian dollars equals to 1 US dollar. We are supposed to write an expression that can be used to convert 22 Australian dollars to US dollars.

To find the amount of US dollars in 22 Australian dollars we will divide 22 by amount of Australian dollars that is equal to 1 US dollar (1.2 AUD).

$22\text{ AUD}=\frac{22\text{ AUD }\cdot 1\text{ USD}}{1.20\text{ AUD}}$

Australian dollars will cancel out with Australian dollars from unit parts and our unit will be in American dollars.

$22\text{ AUD}=\frac{22\cdot 1\text{ USD}}{1.20}$

Therefore, our desired expression that can convert 22 Australian dollars to US dollars will be  $\frac{22\text{ AUD }\cdot 1\text{ USD}}{1.20\text { AUD}}$.

Answer 2

$22 AUD * 1 USD / 1.2 AUD
Hope that helps