Answer: 2/3
Explanation:
Here, The first batch was 120 gingerbread cookies and the second batch consist of 150 shortbread cookies.
And, the same fractions of cookies from each batch were saved.
Let x parts of each of cookies were saved.
Then The number of the saved gingerbread cookies = 120 x
While, The number of the saved shortbread cookies = 150 x
And, Again according to the question, The number of the saved shortbread cookies is 20 more than The number of the saved shortbread cookies.
That is, 150 x - 120 x = 20
⇒ 30 x = 20
⇒ x = 2/3
Thus, The 2/3 part of each cookies were saved.