You're over complicating it because you don't need rates within subcategories when looking at the whole - e is given and f is useless. 3.8 - 2.8 = 1 The overa

You're over complicating it because you don't need rates within subcategories when looking at the whole - e is given and f is useless. 3.8 - 2.8 = 1 The overall inflation is 3.8. Overall inflation without food and fuel is 2.8. The overall inflation attributable to food and fuel must then be 1 (this is different than rste of inflation within food and fuel as a category, f).