Question: What is 16% of 80?
You have to change the percentage to a decimal.
Remove the percentage sign and divide by 100 (% are based off 100)
16%⇒.16
Now multiply .16 and 80
Answer: 12.8
Use the PT to solve for this. Use the dotted lines to find a and b. see attached. Its a little messy..........oops xD