What is a good story problem for 3/4 multiplied by 1 1/2

Story problem? What do you mean?

Is this a homework question?

"I have a recipe that requires 3/4 cup of water. If I want to make 1 1/2 times more of the recipe, how much water do I need?"

3/4 * 1 1/2 = 3/4 * 3/2 = 9/8