To find the fraction of the cars on the lot that are both gray and electrically powered, we need to know how many total cars there are in the lot. Since we only have the number of gray cars (25) and the number of gray electrically powered cars (13), we can express the fraction of the cars that are both gray and electrically powered as follows, assuming \( T \) is the total number of cars:
The fraction is given by:
\[ \text{Fraction} = \frac{\text{Number of gray electrically powered cars}}{\text{Total number of cars}} = \frac{13}{T} \]
However, without the value of \( T \), we cannot express it in simplified fraction form.
If you know the total number of cars in the lot, please provide that information so we can compute the simplified fraction. If not, we can only represent the answer as \( \frac{13}{T} \) where \( T \) is the total number of cars.