Question

The table gives the probabilities of which type of sandwich is likely to be the top-selling item each month in restaurants across four towns. If in a particular month, one of the four types of non-vegetarian sandwiches is the top-selling item in all four towns, arrange the towns in increasing order of the probability that the top-selling item in the town is a chicken sandwich.
INSTRUCTIONS:Drag each tile to the correct box.

Answer 1

2,3,4,1, the probability is in order from greatest to least. If they asked for least to greatest then, 1,4,3,2. So use the least to greatest one.

Answer 2

The table is a little strange because the rows don't add to 100% and the colums don't add to give their "total." Thus, it is not real clear exactly what the table is trying to tell us.

We assume we can figure the desired probability (chicken sandwich is tops given that a non-veggie sandwich is tops) by adding the non-vegetable numbers for a town and dividing that into the number for chicken sandwiches. This is what we have done in the attached spreadsheet. The result is that the desired ordering appears to be ...
  Town 1 ⇒ Town 4 ⇒ Town 2 ⇒ Town 3