What is 5 1/2% tax on $20?

5.5 move decimal place over twice 20*.055 = $1.1 in sales tax

5 1/2 percent must be converted to decimal form first to calculate immediately the value of 5 1/2 percent of $20. 5 1/2 percent over 100 percent is equal to 0.055. The product therefore is equal to 0.055*$20 equal to $1.1. The final answer is $1.1. The unit $ remains the same