A.) x + (x - 6) + 2(x - 6) = 54

B.) x - 6x + (x + 2) = 54

C.) x - 6 + 2x = 54

D.) x + (x - 6) + 2x = 54

E.) 2(x + 6) + (x + 6) + x = 54

x = Amanda's age

x - 6 = Ella's age {Ella is 6 years younger than Amanda}

2x = Zoe's age {Zoe is twice as old as Amanda}

The total of their ages is 54.

x + (x - 6) + 2x = 54 {added the ages and set equal to 54}

Answer is

**D.)**

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