Abook store is having a 30% off sale. diary of a wimpy kid books are now $6.30 each. what was the original price of the books? give your answer in detail, (showing the steps), i am terrible in ! !

By the words "30% sale", this means that the current price of the book Diary of a Wimpy Kid is only 70% of its original price. We can mathematically express the scenario through the equation below,
                                 current Price = (original price) x 0.70
Substituting the known values from the given above,
                                  6.30 = original price x 0.70
The original price is therefore $9.0. 

Sorry can't answer that question