Question

A book 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? Please give your answer in detail, (showing the steps), I am terrible in Math!!! TERRIBLE!!!

Answer 1

To find the original price of a book that is now priced at $6.30 after a 30% discount, divide $6.30 by 0.7. The result is $9.00, which indicates that the original price of the book was $9.00.

Step-by-step explanation:

To calculate the original price of the books before the 30% sale, we need to work backwards from the sale price to determine the full price. Since the books are on sale for $6.30 after the 30% discount, this means that $6.30 represents 70% of the original price. To find the original price, we'll divide the sale price by 0.7 (the decimal form of 70%).

Here's the step-by-step calculation:

1. Write down the sale price: $6.30.
2. Convert the percentage of the sale to a decimal to reflect the remaining percentage of the price paid: 100% - 30% = 70%, which converts to 0.7.
3. Divide the sale price by the decimal: $6.30 / 0.7 = $9.00.

Therefore, the original price of the 'Diary of a Wimpy Kid' books was $9.00 each before the sale.

Answer 2

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.