Question:
Consider a cookie recipe in which 1 1/2 cups of chocolate chips are needed to make 25 cookies. Lara wants to double the number of cookies. How many cups of chocolate chips should she use?
Answer:

Explanation:
Given


Required
Number of cups when the cookies is doubled
When
,

So, when the number of cookies is doubled, the number of cups will also be doubled.
i.e.


and

Convert to improper fraction




i.e. 3 cups are needed