Final answer:
The basketball player made 40% of the shots.
Step-by-step explanation:
To find the percentage of shots the basketball player made, we need to divide the number of shots made by the total number of shots attempted and then multiply by 100. In this case, the basketball player made 12 out of 30 shots. So the percentage of shots made is:
Percentage = (Shots Made / Total Shots Attempted) x 100
Percentage = (12 / 30) x 100 = 40%
Therefore, the basketball player made 40% of the shots.