Respuesta :

For 4 calls, barbecue sauce = 3 ounce
For 1, it is = 3/4 Ounce

Now, For 6 people, it would be: 3/4 * 6 = 18/4 = 9/2 = 4.5 

In short, Your Answer would be 4.5 Ounces

Hope this helps!
4.5 is what it should be