The Weighted Aggregate Method fixes the Simple Aggregate Method's main flaw by multiplying each commodity's price by a weight $w$ (usually its base-year quantity $q_0$) before adding: $P_{01}=\dfrac{\Sigma p_1 w}{\Sigma p_0 w}\times100$. The same weight must be used for a commodity in both the base-year and current-year totals. Because heavily-consumed commodities carry more weight, this method gives a more realistic picture of how expensive the "average basket" has become than the Simple Aggregate Method does.