The Table given below presents the number of books on different subjects kept on separate shelves. Subjects with odd and even numbers are of Arts and Science respectively.

What is the ratio of the number of books of S1 and the average number of books per subject?

13 : 17

Average number of books = \(\frac{26 + 29 + 31 + 34 + 36 + 38 + 44}{7}\)

= \(\frac{ 238}{7}\)

= 34

Now ,   Number of books of S1  :   Average number of Books per subject

                         26                  :                 34

                         13                  :                 17