Answer:
To make 18 oz of furniture polish, 4.5 oz of vinegar and 13.5 oz of olive oil are needed.
Step-by-step explanation:
The ratio of ingredients is ...
oil : vinegar = 3 : 1
So vinegar is 1 of the 3+1 = 4 parts of the polish mix. The amount of vinegar required for 18 oz of polish is ...
(1/4)×(18 oz) = 4.5 oz
The remaining quantity is olive oil:
18 oz - 4.5 oz = 13.5 oz