A small nation of 10 people Idolizers the tv show mentor all the produce and the consumes Karaoke machines and CD's in the following amounts.
karaoke CD's
year quantity price quantity price
2011 10 40 30 10
2012 12 60 50 12

a. using the consumer price index ,compete the percentage change in the overall price level. set 2011 as the base year ,and fix the basket at 1 karaoke machine and 3CD'S.