Question

the bookstore at YSU is having a sale in which all items are discounted 20% including tax Kevin paid $63 for his textbook if the sales tax rate is 5% what was the original price for textbook

Answer 1

Since the final price Kevin paid is $63, we need to "remove" the tax rate and the discount.

To do so, we can divide by 1.05 (+5%) to remove the tax rate and by 0.8 (-20%) to remove the discount.

So we have:

`\text{Price}=(63)/(1.05\cdot0.8)=(63)/(0.84)=75`

So the original price is $75