At target in aisle 12 there were 6 boxes of 24 cupcakes. In aisle 14, there were 8 boxes of 36 cupcakes. The store had 800 cupcakes. How many cupcakes were in aisle 11?

So in asile 12 we have 6*24 cupcakes (144) and in aisle 14 we have 8*36 cupcakes (288). Assuming there are no cupcakes in aisle 1-10 or aisle 13 then aisle 11 would have 800-144-288 cupcakes.