Assume that an average consumer’s spending is split among bread, meat, milk and vegetables in the ratio 4 : 3 : 2 : 1. Over a year, the price of bread decreases by 10%, the price of meat rises by 20%, and the prices of both milk and vegetables rise by 10%. By how much does the average price level increase during the year?
- A5%
- B7.3%
- C10%
- D12.5%