No, not right. And I am not sure which question you are answering! (But 468 miles is not the answer to either.)
The first question mr fantastic asked was "Let distance from Aunt = x. What is the distance from home?" You were told that "you are currently twice as far from home as you are from your aunt's". What is "twice as far as from Aunt's" if "distance to Aunt's" is x?
And the total of those two is the total distance to Aunt's which is ?