Study the given graph and answer the question that follows.

What is the ratio of the number of workers in the company whose age is 28 years or more but less than 40 years to the number of workers whose age is 40 years or more but less than 52 years?

7 : 6

Number of workers aged b/w 28 & 40 : Number of workers aged b/w 40 & 52

      ( 90 + 85 + 70 )   :    ( 75 + 80 + 55 )

              245             :          210

                7               :            6