Can an expert please help me find the answer to b-1, regarding the Profability-index!? Itwould be greatly appreciated!

Consider the following projects: Assume that the projects are mutually exclusive and that the opportunity cost of capital is 11%. a. Calculate the profitability index for each project. (Do not round intermediate calculations. Round your answers to 2 decimal pleces.) Answer is complete and correct. b.1. Calculate the profitability-index using the incremental cash flows. (Do not round intermediate calculotions. Round your answer to 2 decimal places.)