Answer:
She needs 2 cups of raspberries.
Explanation:
Consider the provided information.
Priya has picked 1 1/2 cups of raspberries, which is enough for 3/4 of a cake.
So this can be written as:


Multiply both the sides by
.

2 Raspberries = 1 cake
Hence, she needs 2 cups of raspberries.