Question

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

Assume 1.2 Australian dollars equals 1 US dollar.
$22 AUD ×
$22 AUD ×
$1.20 AUD ×
$1.20 AUD ×

Answer 1

22 AUD × (1 USD)/(1.2 AUD)

Explanation:

1.2 AUD = 1 USD

Divide both sides by 1.2 AUD.

(1.2 AUD)/(1.2 AUD) = (1 USD)/(1.2 AUD)

(1 USD)/(1.2 AUD) = 1

The conversion factor from AUD to USD is (1 USD)/(1.2 AUD)

Answer: 22 AUD × (1 USD)/(1.2 AUD)