Final answer:
Jake's ratio of t-shirts to collared shirts is 2:1.
Step-by-step explanation:
To find Jake's ratio of t-shirts to collared shirts, we need to divide the number of t-shirts by the number of collared shirts. Jake has 10 t-shirts and 5 collared shirts, so the ratio is 10 t-shirts to 5 collared shirts, or 10:5.
This ratio can be simplified to 2:1 because both 10 and 5 are divisible by 5.