In an examination a pupil's average marks were 63 per paper. If he had obtained 22 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?	Choose the correct choice from the following options
A) 8  B) 9  C) 10  D) 11  E) 12
Let the number of papers be x. Then,   63x + 22 + 2 = 65x   = 2x = 24   = x = 12.   ANSW12R:12
<result>E</result>
In an examination a pupil's average marks were 63 per paper. If he had obtained 22 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?