At the beginning of his diet, jack weighed 240 4/5 pounds. At the end of the diet, he weighed 3/4 his original weight. What did jack weigh at the end of the diet?
So we start of with Jack weighing in at 240 and 4/5 pounds (240.8). You start by multiplying 3/4 by the 240.8 lbs. This will give you 180.6 pounds. (Or 180 and 3/5 in fraction terms.)