Question

A restaurant supplier receives a discount on each oven purchased. The original price of each oven is x dollars. The restaurant supplier purchases 9 ovens for a total of (9x - 180). By how much is each oven discounted?

Answer 1

Each oven is discounted by $20.

Explanation:

Original price of oven in dollars =
`x`

To find total cost for 9 such ovens without discount we will apply unitary method.

If 1 oven costs in dollars =
`x`

Then 9 ovens will cost in dollars =
`9x`

The ovens are purchased by a restaurant supplier at some discounted price.

The new price after discount in dollars =
`9x-180`

We see that the total cost of 9 ovens which was originally
`=9x` has been decreased to
`=9x-180` after discount.

The decrease amount is the discount amount on 9 ovens which is = $180

To find discount offered on each oven, we will again use unitary method.

Discount on 9 ovens = $180

∴ Discount on 1 oven =
`(\$180)/(9)=\$20`

∴ Each oven is discounted by $20.