document.write( "Question 388517: the cost of 9 gallons of regular gasoline 16 gallons of premium gasoline is $58.55. Premium costs $.30 more per gallon than regular. what is the cost of a gallon of premium gasoline? \n" ); document.write( "

Algebra.Com's Answer #274843 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,         
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document.write( "Let x and (x+.30)represent the cost of regular and premium gas respectively
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document.write( "Question States:
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document.write( "  9x + 16(x+ $0.30) = $58.55
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document.write( "            25x = $58.55 - 16*$0.30
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document.write( "            25x = $53.75
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document.write( "              x = $53.75/25
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document.write( "              x = $2.15, cost of regular, premium costs $2.45  ($2.15 + $0.30)\r
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document.write( "CHECKING our Answer
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document.write( "  9*$2.15 + 16*$2.45 = $19.35 + $39.20 = $58.55 \n" );
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