David obtained 36, 35, 42, 57 and 55 marks (out of 100) in English, Mathematics,Physics, Chemistry and Biology What are his average marks ? Choose one:
A) 75 B) 45 C) 87 D) 165 E) 11
Explanation:   Average = (36+ 35+ 42+ 57+ 55 )/ 5 = 225/5= 
<gadget id="calculator">225/5</gadget>
<output>45</output>
45.   Answer:45
<result>B</result>
David obtained 36, 35, 42, 57 and 55 marks (out of 100) in English, Mathematics,Physics, Chemistry and Biology What are his average marks ?