Lettuce & tomato, lettuce & bacon , lettuce & cheese , lettuce & mustard
tomato & lettuce , tomato & bacon , tomato & cheese , tomato & mustard
bacon & lettuce , bacon & tomato , bacon & cheese , bacon & mustard
cheese & lettuce, cheese and tomato, cheese & bacon , cheese & mustard
mustard & luttuce , mustard & tomato , mustard & Bacon , mustard & cheese
THE ANSWER IS D.) 20
BECAUSE ITS PROPORTIONAL REALTIONSHIP TO FIND OUT MORE WHAT THE MEAN YOU MAY LOOK IT UP ON A SITE CALLED KHAN ACADEMY
