To find out how many cars are blue, you can calculate 30% of the total number of toy cars Jason has, which is 60.
Here's how you can do it:
\[ \text{Number of blue cars} = 30% \times 60 \]
Convert 30% to a decimal:
\[ 30% = \frac{30}{100} = 0.3 \]
Now multiply:
\[ \text{Number of blue cars} = 0.3 \times 60 = 18 \]
So, Jason has 18 blue cars.