The answer is 1 USD = 1.0343 AUD
because the ratio is 1 USD:1.0343 AUD
fraction is
1.0343AUD/1USD
use to cancel out units
1.0343AUD/1USD times 80 USD=82.744 AUD
the answe ris the first one
The Length would be 3
5+5= 10
16-10 =6 / 2 =3
.45, because it's 45/100.
