The historical cost of sales figure for Pear Ltd for the year ended 31 December 2012 is calculated as follows:

\begin{tabular}{lr}

Opening inventory & $£$ \\

Purchases & 50,000 \\

& 450,000 \\

Closing inventory & 500,000 \\

Cost of sales & $\underline{430,000})$ \\

\hline

\end{tabular}

Price indices for inventory are as follows:

Index at date of purchase of opening inventory 80 Index at date of purchase of closing inventory 120 Average index for 2012 Index at 31 December $2012 \quad 130$

Required:

Assuming that purchases occur evenly throughout the year, calculate the cost of sales adjustment for Pear Ltd for 2012.