The way the problem is stated, it is not very clear.
I assume the original recipe uses 80 g of cheese, and she increased it by 60%.
The increase is 60%, so we need to calculate 60% of 80 g.
60% of 80 g = 60% * 80 g = 0.60 * 80 g = 48 g
Answer: The recipe requires 48 g more cheese.