Billy is training for a half marathon. For the problem below, use tape diagrams, numbers, and words to explain each answer.
c. Since he began exercising so much for his half marathon, Billy has been losing weight. In his first wee k of training, he lost 2 kilograms 530 grams. In the following two weeks of training, he lost 1 kilogram 855 grams each week. Billy now weighs 61 kilograms 760 grams. What was Billy’s weight, in grams, before he started training? Explain your thinking. Use the scribble tool or text boxes to show your work.