GED Math: Calculate Original Textbook Price with Sales Tax Included

Solving for Original Price with Sales Tax

• 🎯 The problem asks to find the original price of a textbook when the final price, including a 6% sales tax, is $126.14.
• 💡 The formula used is: New Price = (1 + r) * Original Price, where 'r' is the sales tax rate as a decimal.
• 🔑 In this case, the New Price is $126.14 and the sales tax rate 'r' is 0.06.
• 💰 The equation becomes: $126.14 = (1 + 0.06) * Original Price$, which simplifies to $126.14 = 1.06 * Original Price$.
• 🧮 To find the Original Price, divide the New Price by 1.06: $126.14 / 1.06 = 119$.
• ✅ Therefore, the original price of the textbook was $119.