document.write( "Question 729345: a dealer has 400 gallons of low octane gasoline worth $1.29 a gallon. How many gallons of high octane gasoline worth $1.35 a gallon should he blend with the low octane gasoline sa as to produce a mixture wirth $1.31 a gallon? \n" ); document.write( "
Algebra.Com's Answer #445825 by josgarithmetic(39618)\"\" \"About 
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u = amount of low strength material, 400 gallons
\n" ); document.write( "v = amount of high strength material, unknown gallons
\n" ); document.write( "L = concentration (of money) of low strength material, $1.29/gallon
\n" ); document.write( "H = concentration (of money) of high strength material, $1.35/gallon
\n" ); document.write( "T = concentration (OF MONEY) of mixture, $1.31/gallon\r
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\n" ); document.write( "\n" ); document.write( "EQUATION TO RELATE THE QUANTITIES
\n" ); document.write( "\"highlight%28%28uL%2BvH%29%2F%28u%2Bv%29=T%29\"
\n" ); document.write( "Solve for v, and then substitute values to evaluate the formula of v.
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