Three man worked together to complete a project. their manager concluded that the first man did 3/5 of the project and the project and the second man did 1/3 of the project. what part of the project did the third man do?

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z