14. Prices paid and quantities consumed of three commodities during two time periods are
\begin{tabular}{|c|c|c|c|c|}
\hline \multirow{2}{*}{ commodity } & Time period I & \multicolumn{2}{c|}{ Time period II } \\
\cline { 2 - 5 } & \( p _{0} \) & \( q _{ o } \) & \( p _{1} \) & \( q _{1} \) \\
\hline A & 10 & 2 & 15 & 1 \\
\hline B & 15 & 3 & 10 & 3 \\
\hline C & 20 & 4 & 15 & 4 \\
\hline
\end{tabular} what is the percentage change in prices if the quantity of period 2 is used as weight
