Why do we have to assume that "Marketing will directly co-relate to the number of sales".
Say in 2 Cities ( A & B), comfy & turbo highly markets their car.
say in city A - comfy sells 100 cars
in City B - comfy sells 200 cars
rest of all cities ( c,d,e,f,....Z) - comfy sells 100 cars
Total cars sold by comfy - 400 cars
Now Turbo
say in city A - Turbo sells 99 cars
in City B - Turbo sells 150 cars
rest of all cities ( c,d,e,f,....Z) - Turbo sells 152 cars ( As we don't know
...
Say in 2 Cities ( A & B), comfy & turbo highly markets their car.
say in city A - comfy sells 100 cars
in City B - comfy sells 200 cars
rest of all cities ( c,d,e,f,....Z) - comfy sells 100 cars
Total cars sold by comfy - 400 cars
Now Turbo
say in city A - Turbo sells 99 cars
in City B - Turbo sells 150 cars
rest of all cities ( c,d,e,f,....Z) - Turbo sells 152 cars ( As we don't know
...