Dacid obtained 72, 45, 72, 77 and 75 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?  Choices
A) 67
B) 68
C) 87
D) 26
E) 75

Rationale: "average = ( 72 + 45 + 72 + 77 + 75 ) / 5 = 341 / 5 = 68 . answer : b"
Answer: B