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12 January, 10:16

The average price of a gallon of gas increased by 12% in 2010 and by 10% in 2011. By what percentage did the average price of a gallon of gas increase between January 1st 2010 and January 1st 2012?

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  1. 12 January, 10:24
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    16.67% increase

    Step-by-step explanation:

    finding the percentage price increase

    we need to find the difference in percentage price between the 2 years

    12%-10% = 2%

    2%/12% x 100% = 100%/6 = 16.67%

    20% increase between January 1st 2010 and January 1st 2011
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