A small nation of 10 people idolizes the TV show The Voice. All they produce and consume are karaoke machines and CDs, in the following amounts: Karaoke Machines CDs Quantity Price Quantity Price (Dollars) (Dollars) 2020 10 20 50 13 2021 15 30 60 15 Using a method similar to that used to calculate the consumer price index, the percentage change in the overall price level is . (Note: Use 2020 as the base year, and fix the basket at 1 karaoke machine and 5.

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