Final answer:
The question lacks details related to Fred and Bill's wills, making it impossible to provide an accurate sum that will be received by the lifeboat association from their assets.
Step-by-step explanation:
The student's question does not provide enough detail regarding the specific wills of Fred and Bill to determine how much the lifeboat association will receive in total from both brothers' assets. Without specific information about the will's clauses, the value of their assets, and any conditions attached to the bequests, it is not possible to calculate a total sum. It is essential to have access to the details of each will to answer accurately.
In matters of inheritance and will, provisions can vary greatly, and the outcome can depend on the specific wordings and legal structures set out by the individuals.