Question

Becker lumber gives contractors a 10% discount on all orders. After the discount a contractor's order cost $279. What was the original cost of the order?

Answer 1

`$310`

Explanation:

So, the cost after the discount was `$279`. That means `10%` of the original cost was taken away to get the `279`, which is thus `90%` of the original cost.

Let `x` be the original cost.

`279=.9x`

`x=279/.9`

`x=310`