Study the bar graph and answer the question that follows.

The ratio of the total production of organic fertilisers by the company in the years 2005, 2006 and 2008 to the total production in the years 2001, 2002, 2003 and 2004, is:

6 : 5

Total production of organic fertilizers by the company in the years 2005, 2006 and 2008  :   Total production in the years 2001, 2002, 2003 and 2004

( 60 + 45 + 75 )  :  ( 20 + 35 + 55 + 40 )

              180      :            150

                 6       :             5