Answer:
33%
Explanation:
The values in the ends of the rows are found by adding together the two previous cells.
For the first row, we would add the value in cell AC to the value in AD to get the value in the Total column. This means we add 20%+g to get 53%;
20+g = 53
Subtract g from each side:
20+g-20 = 53-20
g = 33