Final answer:
The maximum allowable body fat percentage for those between 17-20 years of age varies based on gender, with optimal fat content ranging from 20-30% for females and 12-20% for males.
Step-by-step explanation:
The maximum allowable body fat percentage for those between 17-20 years of age depends on gender. For females, the optimal fat content is between 20 and 30 percent of their total weight. For males, the optimal fat content is between 12 and 20 percent of their total weight.