Why is the solution to 15.7 Cb * ILF(1000000) / ILF(100000) and not as per the core reading equation Cb.( ILF(1000000) - IFL(100000))??
Hi there Cb.( ILF(1000000) - IFL(100000)) would calculate the expected loss cost to a layer from £100,000 to £1,000,000 (or £900,000 xs £100,000). The question asks you for the expected loss cost for a layer of £1,000,000 (ie £1,000,000 xs £0) which is why the answer is Cb * ILF(1000000) / ILF(100000).