Muscle mass ZaiShawn currently has:

He increases his muscle mass by 15%. So, the increased amount is 15% of p. That is:
15% = 15/100 = 0.15
0.15 * p , or

This is his increased amount of muscle mass. We add it with his initial muscle mass, p.
After weight training, the total muscle mass, in pounds, of ZaiShawn is:

Answer:
C