The following bar graph shows the sales (in thousands) of magazines from six branches (A, B, C, D, E and F) of a publishing company during two consecutive years 2021 and 2022.

What percentage of the total sales of branch C for both years is the total sales of branch F for both years? (round your answer up to two decimal places)

The correct answer is 73.17%.

From the given bar graph, we can observe the sales data (in thousands) of magazines for branches C and F during the years 2021 and 2022:

Step 1: Find the total sales of branch C for both years.
Sales of branch C in 2021 = 95 thousand
Sales of branch C in 2022 = 110 thousand

$\text{Total sales of branch C}=95+110=205$

Step 2: Find the total sales of branch F for both years.
Sales of branch F in 2021 = 70 thousand
Sales of branch F in 2022 = 80 thousand

$\text{Total sales of branch F}=70+80=150$

Step 3: Calculate the required percentage.
We need to find what percentage the total sales of branch F is of the total sales of branch C:

$\text{Percentage}=\left(\frac{\text{Total sales of branch F}}{\text{Total sales of branch C}}\right)\times 100$

Substitute the calculated values into the formula:

$\text{Percentage}=\left(\frac{150}{205}\right)\times 100$

$\text{Percentage}=\frac{15000}{205}=73.1707\%$

Rounding to two decimal places, the percentage is 73.17%.