From the information provided in the question, the total mass of the nucleons is 60.49218 u.
The term nucleons refers to both the neutrons and the protons that are found in the nucleus of atoms. We have the following information;
Mass of Proton: 1. 007825 u
Mass of Neutron: 1. 008665 u
Mass of 27 neutrons = 27(1. 008665 u) = 27.233955
Mass of 33 protons = 33(1. 007825 u) = 33.258225
Total mass of nucleons = 27.233955 + 33.258225 = 60.49218 u
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