David obtained 86, 85, 82, 87 and 85 marks (out of 100) in English, Mathematics,Physics, Chemistry and Biology What are his average marks ?  Choose the correct option:
A) 75
B) 276
C) 87
D) 85
E) 11
Explanation:   Average = (86+ 85+ 82+ 87+ 85 )/ 5 = 425/5= 
<gadget id="calculator">425/5</gadget>
<output>85</output>
85.   Answer:85
<result>D</result>
David obtained 86, 85, 82, 87 and 85 marks (out of 100) in English, Mathematics,Physics, Chemistry and Biology What are his average marks ?