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In 2005​, about 5 billion gal of renewable​ fuels, such as ethanol and other​ biofuels, were used in the United States. The energy law passed in 2007 requires that 35 billion gal of such fuels be used by 2022. What is the percent of​ increase?

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jianniosborne
11.11
 5/45 = x/100 (reduce fraction to lowest terms to make it easier to work with) 
1/9 =x/100 
.1111 = x/100 
.1111x100 = x 
11.11 = x 

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