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Prices of the Big Mac vary with time. In 1992, a Big Mac cost about $2.19. (a) In 1968, a Big Mac cost about $0.49. Find the percentage that the 1968 price compared to the 1992 price. (b) In 2010, a Big Mac cost about $3.25. Find the percentage that the 2010 price compared to the 1992 price. Big Mac Price Index. Year Index Number 1968 1992 2010 ................
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