Answer:
B. 22 AUD * ($1)/(1.2 AUD)
Step-by-step explanation:
Start with the equation of the conversion.
1.2 AUD = $1
Now divide both sides by 1.2 AUD.
(1.2 AUD)/(1.2 AUD) = ($1)/(1.2 AUD)
The left side equals 1 since you have a fraction in which the numerator and denominator are equal.
1 = ($1)/(1.2 AUD)
Notice that the line above shows that the fraction on the right equals 1. Since multiplying a number by 1 does not change the number, you can multiply a number of Australian dollars by ($1)/(1.2 AUD) without changing the amount.
Now start with 22 AUD.
We multiply it by the fraction ($1)/(1.2 AUD). This will nmot change the amount of ,money since this fraction equals 1.
22 AUD * ($1)/(1.2 AUD)
The expression above will give you a number in U.S. dollars since AUD cancels out.
Answer: B. 22 AUD * ($1)/(1.2 AUD)
