The average of total sales (in thousands and Correct to two decimal places) by all branches for both the years is:

As per above given Bar graph :

Sales of B1 for both years = 80 + 105 = 185

Sales of B2 for both years = 75 + 65 = 140

Sales of B3 for both years = 95 + 110 = 205

Sales of B4 for both years = 85 + 95 = 180

Sales of B5 for both years = 75 + 95 = 170

Sales of B6 for both years = 70 + 80 = 150

Total sales for both years = 185 + 140 + 205 + 180 + 170 + 150 = 1030

Avg. sales for both years = $$\frac {1030}{6} = 171.666$$