defence exam CISF Head Constable Ministerial (HCM) & ASI Steno Mock Test Series Quantitative Aptitude Average
In an examination, average marks of a student per paper were 71. If he would have obtained 35 more marks in science; 11 more marks in history and 4 more marks in computer science, his average marks per paper would have been 76. How many papers were there in the examination?
1
18
2
12
3
10
4
15