Instructions:
Study the following times graph and answer the question on its basis?
The sales of books (in thousand) of books issued in two consecutive years of 2010 and 2011 of five branches of a publishing company (C1, C2, C3, C4 & C5) have been given.
Find out the average of all companies in the year 2010 (in thousand)?
1
77
2
75
3
74
4
76