The given bar graph indicates the production of sugar (in lakh tonnes) by three different sugar companies P, Q and R from the year 2015 to 2019. Study the bar graph and answer the question that follows. Production of sugar by companies P, Q and R from 2015 to 2019

The ratio of the average production of sugar by company P from the year 2015 to 2019 to the average production of sugar by company R from the year 2015 to 2019 is: