David obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, mathematics, physics, chemistry and biology. What are his average marks?  Choose the correct choice from the following options.
A) 65 B) 69 C) 75 D) None of these E) Cannot be determined
Solution:   Average= (76+65+82+67+85)/5 =375/5= 
<gadget id="calculator">375/5</gadget>
<output>75</output>
75.   Hence, average=75.   Answer: Option 75
<result>C</result>
David obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, mathematics, physics, chemistry and biology. What are his average marks?