A store is having a 10%-off sale on all merchandise. If Mai buys one item and saves $18, what was the original price of her purchase? Explain or show your reasoning.

step-by-step explanation:

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:

step-by-step explanation:

6.48/4 4 goes into 6.48 1.62 times