document.write( "Question 808442: Old chevy uses premium gas. accidently topped off with 5 gallos of regular gas. Tank holds 16 galls. Car gets 17 miles pergallon. How many miles will I have to drive care so that when I fill up the gantke with premium, the mixzture is 95% or greater?\r
\n" ); document.write( "\n" ); document.write( "I figured out percentages of regular to premium in 16 gal tank 32% and 69%. I can figure out the miles per gal. by dividing by 17 Mile/gal once I know how many gallons I need. Problem is when I mizx 100% premium with 69% premium. I don't know how to set it up.
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Algebra.Com's Answer #487046 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Try to think your way through the process described.\r
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\n" ); document.write( "\n" ); document.write( "16 gallons of regular;
\n" ); document.write( "17 miles per gallon.
\n" ); document.write( "Want \"mixture\" to become 95% premium gasoline, so how much room needs to be in the tank to do this? Review that information and think, before continuing...\r
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\n" ); document.write( "\n" ); document.write( "The 16 gallons of regular is thought to be as 0% premium. You may start this through \"algebra\". v = how much to remove and replace with premium to get 95% premium:\r
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\n" ); document.write( "\n" ); document.write( "\"%2816%2A0-v%2A0%2Bv%2A100%29%2F16=95\"
\n" ); document.write( "\"v%2A100%2F16=95\"
\n" ); document.write( "\"v=95%2A16%2F100\"
\n" ); document.write( "\"v=15.2\" gallons.\r
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\n" ); document.write( "\n" ); document.write( "The old chevy must consume 15.2 gallons of the regular gasoline and replace it with the premium gasoline to obtain the mixtures of 95% premium... but how many MILES correspond to this 15.2 miles?\r
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\n" ); document.write( "\n" ); document.write( "Use the fuel efficiency datum.
\n" ); document.write( "\"%2815.2%29%2A%2817%29\" \"gallons%28miles%2Fgallons%29\"
\n" ); document.write( "\"highlight%28258%29\" MILES as a target value, minumum.
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