Language: 120: 68 = 100: X solution: X = 56.666...≈ 57

Mathematics: 120: 68 = 100: Y solution: Y = 56.666. .............................................................................................................................

English: 120: 56 = 100: Z solution: Z = 46.666...≈ 47.

Physics: 56

Chemistry:: 80: 32 = 100: X solution: x=40.

57+57+47+56+40=257