To find the fraction of the cars on the lot that are both gray and electrically powered, you need to know two things: the number of gray cars and the total number of cars on the lot.
You provided that there are 25 gray cars, and out of these, 13 are electrically powered. The fraction of cars that are both gray and electrically powered is given by the number of electrically powered gray cars divided by the total number of gray cars.
However, since we need the fraction of the total number of cars in the lot, we also need the total number of cars. Let's denote the total number of cars in the lot as \( T \).
Thus, the fraction of the cars that are both gray and electrically powered is:
\[ \text{Fraction} = \frac{\text{Number of electrically powered gray cars}}{\text{Total number of cars}} = \frac{13}{T} \]
Since you haven't provided the total number of cars in the lot, we can't simplify the fraction further.
If you provide the total number of cars \( T \), I can give the exact fraction in simplified form.