A tax of 20% is collected on every purchase at a supermarket.

Select all the statements that are correct.

Answer Choices

A box of chocolates that costs $10 before tax will cost $12 after tax.


A book that costs $20 before tax will cost $24 after tax.


A set of books that costs $48 after tax will cost $40 before tax.


A flower vase that costs $24 before tax will cost $22 after tax.