When i call the getWeight method with the 96 argument, then the output will be 16.32. It's OK. But if i call the getWeight method for example with the 95 argument, then the output will be 16.150000000000002 instead of 16.15. I wonder why?... (And the Verify button ticks all the boxes with green.) I used the ' return earthWeight*0.17; ' statement.