Let's suppose that Tom drives x miles. Then, the total cost of the first plan will be:
C1 = 53.96 + 0.13x
And the total cost of the second plan will be:
C2 = 43.96 + 0.18x
To find how many miles Tom needs to drive for the two plans to cost the same, we need to solve the following equation:
53.96 + 0.13x = 43.96 + 0.18x
Simplifying:
10 = 0.05x
x = 200
Therefore, Tom needs to drive 200 miles for the two plans to cost the same.