Question

A book store is having a 30% off sale. Dairy of the wimpy kid books are now $6.30 each. What was the original price of the books.

Answer 1

100% - 30% = 70%

70% = 0.7

6.30 / 0.7 = $9

answer: original price of the books were $9

Answer 2

original price of the books was $ 9.

Explanation:

Given: A book store is having a 30% off sale. Dairy of the wimpy kid books are now $6.30 each.

To find : What was the original price of the books.

Solution : We have given that discount = 30%

Cost percent 100% - 30% = 70%

Cost of each book after discount = $6.30.

Let us consider the original price of book = x

x * 70% = $6.30.

x *
`(70)/(100)` = $6.30.

On multiplying by 100 both sides

x *70 = 6.30 * 100.

x * 70 = 630.

On dividing both sides by 70

x =
`(630)/(70)`.

x = $ 9 .

Therefore, original price of the books was $ 9.