Answer: 1:6
P.S I got this question right on khan academy SAT practice.
Explanation:
dough - 1/4 cup
cream: 1/2 cup
12 donuts means
1/4(12) = 3
1/2(2) = 6 * 3 based on their new recipe = 18
the ratio of donuts to cream is now 3:18
simplify this ratio by dividing each by 3, 3/3 = 1, 18/3 = 6
Therefore, the answer is
1:6