Question

A recipe for salad dressing calls for 1/4 cup of vinegar. You have 4 cups of vinegar. How many batches of salad dressing could you with the vinegar?

Answer 1

There are several information’s of immense importance already given in the question. Based on those information’s the answer can be easily deduced.
Amount of vinegar required for making 1 recipe of salad dressing = 1/4 cup
Amount of vinegar available = 4 cups
Then
The number of salad dressings that could be made = [1/(1/4)] * 4
                                                                                   = 4 * 4
                                                                                   = 16
So 16 salad dressings could be made with the amount of vinegar available. I hope the procedure is clear enough for you to understand.