20.90 would be the item before tax. To get the amount of tax, I multiplied 20 by 0.05 and subtracted that amount from 22
Answer:

Step-by-step explanation:
I do not know if this is completely correct
Answer: GOOBLE GOBBLE
Step-by-step explanation: :P
Answer:
I believe it is 3.1875.
Step-by-step explanation:
25% of 2.55 is 0.6375.
2.55 + 0.6375 = 3.1875.