My question is: John weighs 220 pounds when he starts exercising. He manages to lose 10% of his body weight. He then gains back 2 pounds. How much does he weigh at the end? Your thoughts:
He lost 220 * .1 = 22 pounds. So after gaining some weight back he was 22 - 2 = 20 pounds lighter than before. So his weight is 220 - 20 = 200 pounds. The final answer: 200.