Laspeyres chain index is used in order to determine the price change of a basket of goods containing 5 different goods.

The following formula was used and the result was multiplied by 100 to determine an index number which is presented in the table below:

2010	95
2011	144
2012	153
2013	107
2014	109

The index number shows the price change from 1st of January 2010 to 1st of January 2011.

A) Use Laspeyres' Chain Index to determine an index for the basket of goods for the price development from 1st of January 2010 to 1st of January 2015.

B) Determine the average price change during the 5-year.

IL i-(i+1) pigi p;g: IL i-(i+1) pigi p;g