Answer the questions based on the information given in the following table A, B, C, D, E denote companies and 2006, 2007, 2007,2008, 2009 & 2010 denote years. Number of units manufactured (M) and Number of Units sold (S) (in hundreds) by five different companies over the years.
What is the respective ratio of total number of units manufactured by company by company A and B together in the year 2009 to those sold by them in the same year?
