Question

Which expression can be used to convert 80 US dollars (USD) to Australian dollars (AUD)?

1 USD = 1.0343 AUD
1 AUD = 0.9668 USD

Answer 1

1 USD=1.0343 AUD

Answer 2

That works, because the way you would calculate it, is like this:

\[80 USD \times \frac{ 1.0343 AUD }{ USD } \]

Multiply across, USD gets cancelled out, AUD is left.

This all happens because we were given the conversion value of one USD to AUD.