The given bar graph indicates production of salt (in lakh tons) by 3 different sugar companies P, Q and R from year 2016 to 2020.

Production of salt by company A, B and C from 2016 to 2020.

The ratio production of company A in 2016 to the average of production of company B from 2016 to 2020.

80  :  91

Production of company A in 2016 = 80 lakh tons

Sum of production of company B from 2016 to 2020 = 70 + 80 + 90 + 100 + 115 = 455

Avg. = 91

Ratio →  80  :  91