How much will you save if you buy an item listed at $575.50 at a 30 percent discount?

You will save $172.65.

Step-by-step explanation:

The listed price of an item you buy = $575.50

It is at a discount of = 30%

The saving = 30% of 575.50

                  = × 575.50

                  = 0.30 × 575.50

                 = $172.65

New cost of the item after discount = 575.50 - 172.65 = $402.85

You will save $172.65.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: