Five managers are trying to improve productivity, each selected different approach listed below, which manager has the largest productivity improvement (explain your answer)?

• - Angelina Jolie increased output by 15%, but no change to the input
• - Brad Pitt decreased input by 15%, but no change to the output
• - Donald Trump increased both output and input by 5%
• - Barak Obama increased output by 10%, and then decreased input by 3%
• - Abu El3abed decreased input by 10%, and increased output by 3%