Question: dacid obtained 86 , 89 , 82 , 87 and 81 marks ( out of 100 ) in english , mathematics , physics , chemistry and biology . what are his average marks ?
A) 79
B) 99
C) 88
D) 85
E) 75
Correct answer: D
Grade: 6 | Topic: Statistics and Probability | Difficulty: Medium | Standard: 6.SP.A.3