Suppose that ABSs are created from portfolios of subprime mortgages with the following allocation of the principal to tranches: senior 75%, mezzanine 20%, and equity 5%. An ABS CDO is then created from the mezzanine tranches with the same allocation of principal. Losses on the mortgage portfolio prove to be 16%. What, as a percent of tranche principal, are losses on the senior tranche of the ABS CDO.