Answer:
1 cup
Explanation:
2.5 cups 5 dozen.
x cups 2 dozen.
what is the factor to turn 5 into 2 ?
5×a = 2
a = 2/5
so, we need to multiply also the cups with that factor to keep the relationship cups and amount of cookies unchanged.
therefore,
2.5 × 2/5 = 5/2 × 2/5 = 1
she needs 1 cup.