2) The number of apples in Jacob's bag is 4. If there is exactly 1 rotten apple. it means that the fraction of rotten apples in Jacob's bag is 1/4
The number of apples in Amber's bag is 12. Let x represent the exact number of rotten apples. it means that the fraction of rotten apples in Amber's bag is x/12
Since the fractions of rotten apples in both bags is the same, it means that
1/4 = x/12
By crossmultiplying, we have
4x = 12
x = 12/4
x = 3
There were 3 rotten apples in Amber's bag