Let x be the original price. Then the discounted price is discount = x(1 - 0.85) The discounted price is $18.00. Therefore 18.00 = x(0.15) x = 18.00 / 0.15 x = $120.00 The amount she saved is $120.00 - $18.00 = $102.00
The answer to this question is that Ella saved $102.00.